ps -aux 查当前端口占用
connecting to: test > show dbs local 0.078125GB testphp 0.203125GB > use testphp switched to db testphp > show collections; col system.indexes > exit() Tue May 2 17:14:49.378 ReferenceError: exit is not defined > exit; well@well:~$ netstat Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 localhost:50916 localhost:27017 TIME_WAIT tcp 0 0 well:ssh 192.168.95.251:49389 ESTABLISHED tcp 0 240 well:ssh 192.168.95.251:59617 ESTABLISHED Active UNIX domain sockets (w/o servers) Proto RefCnt Flags Type State I-Node Path unix 3 [ ] STREAM CONNECTED 191853 unix 3 [ ] STREAM CONNECTED 43915 unix 3 [ ] STREAM CONNECTED 43914 unix 3 [ ] STREAM CONNECTED 191852 well@well:~$ ps PID TTY TIME CMD 936 pts/1 00:00:00 bash 959 pts/1 00:00:00 ps well@well:~$ ps -aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.0 18320 3216 ? Ss+ 09:05 0:00 /bin/bash root 70 0.0 0.0 61388 3240 ? Ss 09:06 0:00 /usr/sbin/sshd root 73 0.0 0.0 95116 6016 ? Ss 11:57 0:00 sshd: well [pri well 84 0.0 0.0 95116 4092 ? S 11:57 0:00 sshd: well@pts/ well 85 0.0 0.0 18192 3400 pts/0 Ss+ 11:57 0:00 -bash mongodb 878 0.0 0.2 546928 50000 ? Sl 14:48 0:08 /usr/bin/mongod root 924 0.0 0.0 95116 6172 ? Ss 17:03 0:00 sshd: well [pri well 935 0.0 0.0 95116 4100 ? R 17:04 0:00 sshd: well@pts/ well 936 0.0 0.0 18180 3352 pts/1 Ss 17:04 0:00 -bash well 960 0.0 0.0 15572 2060 pts/1 R+ 17:16 0:00 ps -aux well@well:~$
well@well:/$ service mongodb start * Starting database mongodb start-stop-daemon: unable to open pidfile '/var/run/mongodb/mongodb.pid' for writing (Permission denied) [fail] well@well:/$ sudo service start mongod start: unrecognized service well@well:/$ sudo service mongodb start * Starting database mongodb [ OK ] well@well:/$
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>>> collection.remove(testUpdate99) Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'testUpdate99' is not defined >>> collection.remove(testUpdate) {u'connectionId': 5, u'ok': 1.0, u'err': None, u'n': 0} >>> for i in collection.find(): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} >>> new_post = [{"author":"Mike","date":datetime.datetime(2009,11,12,11,14)},{"sth":"sth123"}] Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'datetime' is not defined >>> from bson import * >>> new_post = [{"author":"Mike","date":datetime.datetime(2009,11,12,11,14)},{"sth":"sth123"}] >>> collection.save(new_post) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pymongo/collection.py", line 2435, in save common.validate_is_document_type("to_save", to_save) File "/usr/local/lib/python2.7/dist-packages/pymongo/common.py", line 407, in validate_is_document_type "collections.MutableMapping" % (option,)) TypeError: to_save must be an instance of dict, bson.son.SON, bson.raw_bson.RawBSONDocument, or a type that inherits from collections.MutableMapping >>> collection.insert_many(new_post) <pymongo.results.InsertManyResult object at 0x7fd24ac6d280> >>> for i in collection.find(): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'date': datetime.datetime(2009, 11, 12, 11, 14), u'_id': ObjectId('59032937f9323f04207f7668'), u'author': u'Mike'} {u'_id': ObjectId('59032937f9323f04207f7669'), u'sth': u'sth123'} >>>
怎样筛选出仅有num（属性？节点）的object ？ 有哪些简洁的code的写法？有哪些高效的程序执行方法？
>>> for i in collection.find().sort('num', -1): ... print i ... {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} >>> tmp = collection.find_one({'num':123}) >>> tmp2 = tmp.copy() >>> tmp['num']='num_str' >>> collection.save(tmp) ObjectId('590316a0f9323f04207f7665') >>> for i in collection.find({'num':*}) File "<stdin>", line 1 for i in collection.find({'num':*}) ^ SyntaxError: invalid syntax >>> for i in collection.find({'num':*}) : File "<stdin>", line 1 for i in collection.find({'num':*}) : ^ SyntaxError: invalid syntax >>> for i in collection.find({type:'num'}): ... print i ... Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 1114, in next if len(self.__data) or self._refresh(): File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 1036, in _refresh self.__collation)) File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 873, in __send_message **kwargs) File "/usr/local/lib/python2.7/dist-packages/pymongo/mongo_client.py", line 905, in _send_message_with_response exhaust) File "/usr/local/lib/python2.7/dist-packages/pymongo/mongo_client.py", line 916, in _reset_on_error return func(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/pymongo/server.py", line 124, in send_message_with_response set_slave_okay, sock_info.is_mongos, use_find_cmd) File "/usr/local/lib/python2.7/dist-packages/pymongo/message.py", line 291, in get_message spec, self.fields, self.codec_options) File "/usr/local/lib/python2.7/dist-packages/pymongo/message.py", line 443, in query encoded = bson.BSON.encode(query, check_keys, opts) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 976, in encode return cls(_dict_to_bson(document, check_keys, codec_options)) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 758, in _dict_to_bson check_keys, opts)) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 735, in _element_to_bson "key was %r" % (key,)) bson.errors.InvalidDocument: documents must have only string keys, key was <type 'type'> >>> for i in collection.find({'type':'num'}): ... print i ... >>> for i in collection.find({},{'num':2}): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a')} {u'_id': ObjectId('590310cdf9323f04207f7661')} {u'_id': ObjectId('590310eef9323f04207f7662')} {u'_id': ObjectId('5903165df9323f04207f7663')} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': u'num_str'} >>> for i in collection.find({},{'num':16}): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a')} {u'_id': ObjectId('590310cdf9323f04207f7661')} {u'_id': ObjectId('590310eef9323f04207f7662')} {u'_id': ObjectId('5903165df9323f04207f7663')} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': u'num_str'} >>> for i in collection.find({},{'num':1}): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a')} {u'_id': ObjectId('590310cdf9323f04207f7661')} {u'_id': ObjectId('590310eef9323f04207f7662')} {u'_id': ObjectId('5903165df9323f04207f7663')} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': u'num_str'} >>> for i in collection.find({},{'num':4}): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a')} {u'_id': ObjectId('590310cdf9323f04207f7661')} {u'_id': ObjectId('590310eef9323f04207f7662')} {u'_id': ObjectId('5903165df9323f04207f7663')} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': u'num_str'} >>> for i in collection.find({'num':{'gt:o'}}): ... print i ... Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 1114, in next if len(self.__data) or self._refresh(): File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 1036, in _refresh self.__collation)) File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 873, in __send_message **kwargs) File "/usr/local/lib/python2.7/dist-packages/pymongo/mongo_client.py", line 905, in _send_message_with_response exhaust) File "/usr/local/lib/python2.7/dist-packages/pymongo/mongo_client.py", line 916, in _reset_on_error return func(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/pymongo/server.py", line 124, in send_message_with_response set_slave_okay, sock_info.is_mongos, use_find_cmd) File "/usr/local/lib/python2.7/dist-packages/pymongo/message.py", line 291, in get_message spec, self.fields, self.codec_options) File "/usr/local/lib/python2.7/dist-packages/pymongo/message.py", line 443, in query encoded = bson.BSON.encode(query, check_keys, opts) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 976, in encode return cls(_dict_to_bson(document, check_keys, codec_options)) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 758, in _dict_to_bson check_keys, opts)) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 743, in _element_to_bson return _name_value_to_bson(name, value, check_keys, opts) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 728, in _name_value_to_bson type(value)) bson.errors.InvalidDocument: cannot convert value of type <type 'set'> to bson >>> for i in collection.find({'num':{'gt':o}}): ... print i ... Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'o' is not defined >>> for i in collection.find({'num':{'$gt':o}}): ... print i ... Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'o' is not defined >>> for i in collection.find({'num':{'gt':0}}): ... print i ... >>> for i in collection.find({'num':{'$gt':0}}): ... print i ... {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} >>> colection.update(tmp,tmp2) Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'colection' is not defined >>> collection.update(tmp,tmp2) {u'updatedExisting': True, u'connectionId': 5, u'ok': 1.0, u'err': None, u'n': 1} >>> for i in collection.find({}): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} >>> for i in collection.find(): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} >>> testUpdate = collection.find_one({'num',123}) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pymongo/collection.py", line 1102, in find_one for result in cursor.limit(-1): File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 1114, in next if len(self.__data) or self._refresh(): File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 1036, in _refresh self.__collation)) File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 873, in __send_message **kwargs) File "/usr/local/lib/python2.7/dist-packages/pymongo/mongo_client.py", line 905, in _send_message_with_response exhaust) File "/usr/local/lib/python2.7/dist-packages/pymongo/mongo_client.py", line 916, in _reset_on_error return func(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/pymongo/server.py", line 124, in send_message_with_response set_slave_okay, sock_info.is_mongos, use_find_cmd) File "/usr/local/lib/python2.7/dist-packages/pymongo/message.py", line 291, in get_message spec, self.fields, self.codec_options) File "/usr/local/lib/python2.7/dist-packages/pymongo/message.py", line 443, in query encoded = bson.BSON.encode(query, check_keys, opts) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 976, in encode return cls(_dict_to_bson(document, check_keys, codec_options)) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 754, in _dict_to_bson check_keys, opts)) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 728, in _name_value_to_bson type(value)) bson.errors.InvalidDocument: cannot convert value of type <type 'set'> to bson >>> testUpdate = collection.find_one({'num','123'}) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pymongo/collection.py", line 1102, in find_one for result in cursor.limit(-1): File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 1114, in next if len(self.__data) or self._refresh(): File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 1036, in _refresh self.__collation)) File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 873, in __send_message **kwargs) File "/usr/local/lib/python2.7/dist-packages/pymongo/mongo_client.py", line 905, in _send_message_with_response exhaust) File "/usr/local/lib/python2.7/dist-packages/pymongo/mongo_client.py", line 916, in _reset_on_error return func(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/pymongo/server.py", line 124, in send_message_with_response set_slave_okay, sock_info.is_mongos, use_find_cmd) File "/usr/local/lib/python2.7/dist-packages/pymongo/message.py", line 291, in get_message spec, self.fields, self.codec_options) File "/usr/local/lib/python2.7/dist-packages/pymongo/message.py", line 443, in query encoded = bson.BSON.encode(query, check_keys, opts) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 976, in encode return cls(_dict_to_bson(document, check_keys, codec_options)) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 754, in _dict_to_bson check_keys, opts)) File "/usr/local/lib/python2.7/dist-packages/bson/__init__.py", line 728, in _name_value_to_bson type(value)) bson.errors.InvalidDocument: cannot convert value of type <type 'set'> to bson >>> testUpdate = collection.find_one({'num':'123'}) >>> testUpdate = collection.find_one({'num':123}) >>> testUpdate1 = testUpdate.copy() >>> testUpdate['num'] = '123_str' >>> collection.save(testUpdate) ObjectId('590316a2f9323f04207f7666') >>> for i in collection.find(): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': u'123_str'} >>> collection.update(testUpdate,testUpdate1) {u'updatedExisting': True, u'connectionId': 5, u'ok': 1.0, u'err': None, u'n': 1} >>> for i in collection.find(): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} >>>
collection – Collection level operations — PyMongo 3.4.0 documentation
http://api.mongodb.com/python/current/api/pymongo/collection.html
w
>> for i in collection.find(): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} >>> collection.count() 3 >>> collection.find({'name':'nw'}).count() 1 >>> collection.save({'name':'nw'}) ObjectId('5903165df9323f04207f7663') >>> collection.find({'name':'nw'}).count() 2 >>> collection.save({'num':12'} File "<stdin>", line 1 collection.save({'num':12'} ^ SyntaxError: EOL while scanning string literal >>> collection.save({'num':12'}) File "<stdin>", line 1 collection.save({'num':12'}) ^ SyntaxError: EOL while scanning string literal >>> collection.save({'num':12}) ObjectId('5903169df9323f04207f7664') >>> collection.save({'num':123}) ObjectId('590316a0f9323f04207f7665') >>> collection.save({'num':123}) ObjectId('590316a2f9323f04207f7666') >>> collection.save({'num':3}) ObjectId('590316a5f9323f04207f7667') >>> collection.find().count() 8 >>> for i in collection.find(): ... print i File "<stdin>", line 2 print i ^ IndentationError: expected an indented block >>> for i in collection.find(): ... print i: File "<stdin>", line 2 print i: ^ IndentationError: expected an indented block >>> for i in collection.find(): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} >>> collection.find().sort('num') <pymongo.cursor.Cursor object at 0x7fd24ac6efd0> >>> collection.find().sort("num") <pymongo.cursor.Cursor object at 0x7fd24ac031d0> >>> collection.find().sort("num") <pymongo.cursor.Cursor object at 0x7fd24b29a2d0> >>> >>> collection.find().sort("num") <pymongo.cursor.Cursor object at 0x7fd24ac6efd0> >>> for i in collection.find(): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} >>> for i in collection.find().sort('num') File "<stdin>", line 1 for i in collection.find().sort('num') ^ SyntaxError: invalid syntax >>> for i in collection.find().sort('num'): ... print i: File "<stdin>", line 2 print i: ^ SyntaxError: invalid syntax >>> print i File "<stdin>", line 1 print i ^ IndentationError: unexpected indent >>> for i in collection.find().sort('num'): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} >>> for i in collection.find().sort('num', pymongo.DESCENDING): ... print i ... Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'pymongo' is not defined >>> for i in collection.find().sort('num', pymongo.DESCENDING): ... print i ... Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'pymongo' is not defined >>> for i in collection.find().sort('num', 1): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} >>> for i in collection.find().sort('num', -1): ... print i ... {u'_id': ObjectId('590316a0f9323f04207f7665'), u'num': 123} {u'_id': ObjectId('590316a2f9323f04207f7666'), u'num': 123} {u'_id': ObjectId('5903169df9323f04207f7664'), u'num': 12} {u'_id': ObjectId('590316a5f9323f04207f7667'), u'num': 3} {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} {u'_id': ObjectId('5903165df9323f04207f7663'), u'name': u'nw'} >>>
w
root@well:/# python Python 2.7.6 (default, Oct 26 2016, 20:30:19) [GCC 4.8.4] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> print 'w' w >>> print 1+4 5 >>> from pymongo import * >>> client = MongoClient() >>> exit Use exit() or Ctrl-D (i.e. EOF) to exit >>> exit() root@well:/# mongodb bash: mongodb: command not found root@well:/# mongo MongoDB shell version: 2.4.9 connecting to: test > show dbs local 0.078125GB wellmg 0.203125GB > use wellmg switched to db wellmg > db.col.find() { "_id" : ObjectId("5902f90762277deee7287c0a"), "well" : "www" } > exit; root@well:/# python Python 2.7.6 (default, Oct 26 2016, 20:30:19) [GCC 4.8.4] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from pymongo import * >>> client = MongoClient() >>> db = ckient.wellmg Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'ckient' is not defined >>> db = client.wellmg >>> collection = db.col >>> wdic = {name:'nw'} Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'name' is not defined >>> wdic = {'name':'nw'} >>> collection.insert(wdic) ObjectId('590310cdf9323f04207f7661') >>> wdicb = {'name':'nwb'} >>> collection.save(wdicb) ObjectId('590310eef9323f04207f7662') >>> collection.find() <pymongo.cursor.Cursor object at 0x7fd24ac6efd0> >>> collection.find()[0] {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} >>> collection.find()[1] {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} >>> collection.find()[2] {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} >>> collection.find()[3] Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pymongo/cursor.py", line 570, in __getitem__ raise IndexError("no such item for Cursor instance") IndexError: no such item for Cursor instance >>> for i in collection.find() File "<stdin>", line 1 for i in collection.find() ^ SyntaxError: invalid syntax >>> for i in collection.find() "" File "<stdin>", line 1 for i in collection.find() "" ^ SyntaxError: invalid syntax >>> for i in collection.find() print i File "<stdin>", line 1 for i in collection.find() print i ^ SyntaxError: invalid syntax >>> for i in collection.find(): ... print i File "<stdin>", line 2 print i ^ IndentationError: expected an indented block >>> for i in collection.find(): ... print i ... {u'_id': ObjectId('5902f90762277deee7287c0a'), u'well': u'www'} {u'_id': ObjectId('590310cdf9323f04207f7661'), u'name': u'nw'} {u'_id': ObjectId('590310eef9323f04207f7662'), u'name': u'nwb'} >>>
sudo apt install python-pip
ubuntu@VM-52-248-ubuntu:~/postgresql$ pip install psycopg2 The program 'pip' is currently not installed. You can install it by typing: sudo apt install python-pip ubuntu@VM-52-248-ubuntu:~/postgresql$ sudo apt install python-pip
root@well:/# python -m pip install --upgrade pip Downloading/unpacking pip from https://pypi.python.org/packages/b6/ac/7015eb97dc749283ffdec1c3a88ddb8ae03b8fad0f0e611408f196358da3/pip-9.0.1-py2.py3-none-any.whl#md5=297dbd16ef53bcef0447d245815f5144 Downloading pip-9.0.1-py2.py3-none-any.whl (1.3MB): 1.3MB downloaded Installing collected packages: pip Found existing installation: pip 1.5.4 Not uninstalling pip at /usr/lib/python2.7/dist-packages, owned by OS Successfully installed pip Cleaning up...
python -m pip install --upgrade pip
C:>python -m pip install --upgrade pip Requirement already up-to-date: pip in c:program filesanaconda2libsite-packages C:>
sudo python -m pip install pymongo
C:>python -m pip update ERROR: unknown command "update" C:>python pip update python: can't open file 'pip': [Errno 2] No such file or directory C:>python -m pip install pymongo Collecting pymongo Downloading pymongo-3.4.0-cp27-none-win_amd64.whl (267kB) 3% |¨€¨? | 10kB 1.1kB/s eta 0:03:58Exception: Traceback (most recent call last): File "C:Program FilesAnaconda2libsite-packagespipasecommand.py", line 215, in main status = self.run(options, args) File "C:Program FilesAnaconda2libsite-packagespipcommandsinstall.py", line 310, in wb.build(autobuilding=True) File "C:Program FilesAnaconda2libsite-packagespipwheel.py", line 750, in build self.requirement_set.prepare_files(self.finder) File "C:Program FilesAnaconda2libsite-packagespip eq eq_set.py", line 370, in prep ignore_dependencies=self.ignore_dependencies)) File "C:Program FilesAnaconda2libsite-packagespip eq eq_set.py", line 587, in _pre session=self.session, hashes=hashes) File "C:Program FilesAnaconda2libsite-packagespipdownload.py", line 810, in unpack_ hashes=hashes File "C:Program FilesAnaconda2libsite-packagespipdownload.py", line 649, in unpack_ hashes) File "C:Program FilesAnaconda2libsite-packagespipdownload.py", line 871, in _downlo _download_url(resp, link, content_file, hashes) File "C:Program FilesAnaconda2libsite-packagespipdownload.py", line 595, in _downlo hashes.check_against_chunks(downloaded_chunks) File "C:Program FilesAnaconda2libsite-packagespiputilshashes.py", line 46, in chec for chunk in chunks: File "C:Program FilesAnaconda2libsite-packagespipdownload.py", line 563, in written for chunk in chunks: File "C:Program FilesAnaconda2libsite-packagespiputilsui.py", line 139, in iter for x in it: File "C:Program FilesAnaconda2libsite-packagespipdownload.py", line 552, in resp_re decode_content=False): File "C:Program FilesAnaconda2libsite-packagespip\_vendor equestspackagesurllib3 data = self.read(amt=amt, decode_content=decode_content) File "C:Program FilesAnaconda2libsite-packagespip\_vendor equestspackagesurllib3 flush_decoder = True File "C:Program FilesAnaconda2libcontextlib.py", line 35, in __exit__ self.gen.throw(type, value, traceback) File "C:Program FilesAnaconda2libsite-packagespip\_vendor equestspackagesurllib3 raise ReadTimeoutError(self._pool, None, 'Read timed out.') ReadTimeoutError: HTTPSConnectionPool(host='pypi.python.org', port=443): Read timed out. You are using pip version 8.1.2, however version 9.0.1 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' command. C:>python --upgrade pip Unknown option: -- usage: python [option] ... [-c cmd | -m mod | file | -] [arg] ... Try `python -h' for more information. C:>python -m pip install pymongo --upgrade pip Collecting pymongo Downloading pymongo-3.4.0-cp27-none-win_amd64.whl (267kB) 100% |¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€ Collecting pip Using cached pip-9.0.1-py2.py3-none-any.whl Installing collected packages: pymongo, pip Found existing installation: pip 8.1.2 Uninstalling pip-8.1.2: Successfully uninstalled pip-8.1.2 Successfully installed pip-9.0.1 pymongo-3.4.0 C:>
wuser@ubuntu:~$ python -m pip install pymongo Collecting pymongo Downloading pymongo-3.4.0-cp27-cp27mu-manylinux1_x86_64.whl (362kB) 100% |████████████████████████████████| 368kB 15kB/s Installing collected packages: pymongo Exception: Traceback (most recent call last): File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main status = self.run(options, args) File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 342, in run prefix=options.prefix_path, File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 784, in install **kwargs File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 851, in install self.move_wheel_files(self.source_dir, root=root, prefix=prefix) File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 1064, in move_wheel_files isolated=self.isolated, File "/usr/local/lib/python2.7/dist-packages/pip/wheel.py", line 345, in move_wheel_files clobber(source, lib_dir, True) File "/usr/local/lib/python2.7/dist-packages/pip/wheel.py", line 316, in clobber ensure_dir(destdir) File "/usr/local/lib/python2.7/dist-packages/pip/utils/__init__.py", line 83, in ensure_dir os.makedirs(path) File "/usr/lib/python2.7/os.py", line 157, in makedirs mkdir(name, mode) OSError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/bson' wuser@ubuntu:~$ sudo python -m pip install pymongo The directory '/home/wuser/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. The directory '/home/wuser/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. Collecting pymongo Downloading pymongo-3.4.0-cp27-cp27mu-manylinux1_x86_64.whl (362kB) 100% |████████████████████████████████| 368kB 17kB/s Installing collected packages: pymongo Successfully installed pymongo-3.4.0 wuser@ubuntu:~$
python -m pip install pymongo
root@well:/# python -m pip install pymongo Downloading/unpacking pymongo Downloading pymongo-3.4.0.tar.gz (583kB): 583kB downloaded Running setup.py (path:/tmp/pip_build_root/pymongo/setup.py) egg_info for package pymongo Installing collected packages: pymongo Running setup.py install for pymongo building 'bson._cbson' extension x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -Ibson -I/usr/include/python2.7 -c bson/_cbsonmodule.c -o build/temp.linux-x86_64-2.7/bson/_cbsonmodule.o bson/_cbsonmodule.c:23:20: fatal error: Python.h: No such file or directory #include "Python.h" ^ compilation terminated. /tmp/pip_build_root/pymongo/setup.py:284: UserWarning: ******************************************************************** WARNING: The bson._cbson extension module could not be compiled. No C extensions are essential for PyMongo to run, although they do result in significant speed improvements. The output above this warning shows how the compilation failed. Please see the installation docs for solutions to build issues: http://api.mongodb.org/python/current/installation.html Here are some hints for popular operating systems: If you are seeing this message on Linux you probably need to install GCC and/or the Python development package for your version of Python. Debian and Ubuntu users should issue the following command: $ sudo apt-get install build-essential python-dev Users of Red Hat based distributions (RHEL, CentOS, Amazon Linux, Oracle Linux, Fedora, etc.) should issue the following command: $ sudo yum install gcc python-devel If you are seeing this message on Microsoft Windows please install PyMongo using the MS Windows installer for your version of Python, available on pypi here: http://pypi.python.org/pypi/pymongo/#downloads If you are seeing this message on OSX please read the documentation here: http://api.mongodb.org/python/current/installation.html#osx ******************************************************************** "The output above " command 'x86_64-linux-gnu-gcc' failed with exit status 1 building 'pymongo._cmessage' extension x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -Ibson -I/usr/include/python2.7 -c pymongo/_cmessagemodule.c -o build/temp.linux-x86_64-2.7/pymongo/_cmessagemodule.o pymongo/_cmessagemodule.c:23:20: fatal error: Python.h: No such file or directory #include "Python.h" ^ compilation terminated. /tmp/pip_build_root/pymongo/setup.py:284: UserWarning: ******************************************************************** WARNING: The pymongo._cmessage extension module could not be compiled. No C extensions are essential for PyMongo to run, although they do result in significant speed improvements. The output above this warning shows how the compilation failed. Please see the installation docs for solutions to build issues: http://api.mongodb.org/python/current/installation.html Here are some hints for popular operating systems: If you are seeing this message on Linux you probably need to install GCC and/or the Python development package for your version of Python. Debian and Ubuntu users should issue the following command: $ sudo apt-get install build-essential python-dev Users of Red Hat based distributions (RHEL, CentOS, Amazon Linux, Oracle Linux, Fedora, etc.) should issue the following command: $ sudo yum install gcc python-devel If you are seeing this message on Microsoft Windows please install PyMongo using the MS Windows installer for your version of Python, available on pypi here: http://pypi.python.org/pypi/pymongo/#downloads If you are seeing this message on OSX please read the documentation here: http://api.mongodb.org/python/current/installation.html#osx ******************************************************************** "The output above " command 'x86_64-linux-gnu-gcc' failed with exit status 1 Successfully installed pymongo Cleaning up... root@well:/#
apt-get update
apt-get install mongodb
mongo
service mongodb start
exit
root@well:/# apt-get install mongodb Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libboost-dev libboost-filesystem1.54.0 libboost-program-options1.54.0 libboost-system1.54.0 libboost-thread1.54.0 libboost1.54-dev libgoogle-perftools4 libpcap0.8 libsnappy1 libtcmalloc-minimal4 libunwind8 libv8-3.14.5 mongodb-clients mongodb-dev mongodb-server Suggested packages: libboost-doc libboost1.54-doc libboost-atomic1.54-dev libboost-chrono1.54-dev libboost-context1.54-dev libboost-coroutine.54-dev libboost-date-time1.54-dev libboost-exception1.54-dev libboost-filesystem1.54-dev libboost-graph1.54-dev libboost-graph-parallel1.54-dev libboost-iostreams1.54-dev libboost-locale1.54-dev libboost-log.54-dev libboost-math1.54-dev libboost-mpi1.54-dev libboost-mpi-python1.54-dev libboost-program-options1.54-dev libboost-python1.54-dev libboost-random1.54-dev libboost-regex1.54-dev libboost-serialization1.54-dev libboost-signals1.54-dev libboost-system1.54-dev libboost-test1.54-dev libboost-thread1.54-dev libboost-timer1.54-dev libboost-wave1.54-dev libboost1.54-tools-dev libmpfrc++-dev libntl-dev The following NEW packages will be installed: libboost-dev libboost-filesystem1.54.0 libboost-program-options1.54.0 libboost-system1.54.0 libboost-thread1.54.0 libboost1.54-dev libgoogle-perftools4 libpcap0.8 libsnappy1 libtcmalloc-minimal4 libunwind8 libv8-3.14.5 mongodb mongodb-clients mongodb-dev mongodb-server 0 upgraded, 16 newly installed, 0 to remove and 85 not upgraded. Need to get 8994 kB/21.4 MB of archives. After this operation, 218 MB of additional disk space will be used. Do you want to continue? [Y/n] y Get:1 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libboost1.54-dev amd64 1.54.0-4ubuntu3.1 [5682 kB] Get:2 http://archive.ubuntu.com/ubuntu/ trusty/universe mongodb-server amd64 1:2.4.9-1ubuntu2 [3312 kB] Fetched 2453 kB in 2min 44s (14.9 kB/s) Selecting previously unselected package libpcap0.8:amd64. (Reading database ... 32686 files and directories currently installed.) Preparing to unpack .../libpcap0.8_1.5.3-2_amd64.deb ... Unpacking libpcap0.8:amd64 (1.5.3-2) ... Selecting previously unselected package libboost-system1.54.0:amd64. Preparing to unpack .../libboost-system1.54.0_1.54.0-4ubuntu3.1_amd64.deb ... Unpacking libboost-system1.54.0:amd64 (1.54.0-4ubuntu3.1) ... Selecting previously unselected package libboost-filesystem1.54.0:amd64. Preparing to unpack .../libboost-filesystem1.54.0_1.54.0-4ubuntu3.1_amd64.deb ... Unpacking libboost-filesystem1.54.0:amd64 (1.54.0-4ubuntu3.1) ... Selecting previously unselected package libboost-program-options1.54.0:amd64. Preparing to unpack .../libboost-program-options1.54.0_1.54.0-4ubuntu3.1_amd64.deb ... Unpacking libboost-program-options1.54.0:amd64 (1.54.0-4ubuntu3.1) ... Selecting previously unselected package libboost-thread1.54.0:amd64. Preparing to unpack .../libboost-thread1.54.0_1.54.0-4ubuntu3.1_amd64.deb ... Unpacking libboost-thread1.54.0:amd64 (1.54.0-4ubuntu3.1) ... Selecting previously unselected package libunwind8. Preparing to unpack .../libunwind8_1.1-2.2ubuntu3_amd64.deb ... Unpacking libunwind8 (1.1-2.2ubuntu3) ... Selecting previously unselected package libboost1.54-dev. Preparing to unpack .../libboost1.54-dev_1.54.0-4ubuntu3.1_amd64.deb ... Unpacking libboost1.54-dev (1.54.0-4ubuntu3.1) ... Selecting previously unselected package libboost-dev. Preparing to unpack .../libboost-dev_1.54.0.1ubuntu1_amd64.deb ... Unpacking libboost-dev (1.54.0.1ubuntu1) ... Selecting previously unselected package libtcmalloc-minimal4. Preparing to unpack .../libtcmalloc-minimal4_2.1-2ubuntu1.1_amd64.deb ... Unpacking libtcmalloc-minimal4 (2.1-2ubuntu1.1) ... Selecting previously unselected package libgoogle-perftools4. Preparing to unpack .../libgoogle-perftools4_2.1-2ubuntu1.1_amd64.deb ... Unpacking libgoogle-perftools4 (2.1-2ubuntu1.1) ... Selecting previously unselected package libv8-3.14.5. Preparing to unpack .../libv8-3.14.5_3.14.5.8-5ubuntu2_amd64.deb ... Unpacking libv8-3.14.5 (3.14.5.8-5ubuntu2) ... Selecting previously unselected package mongodb-dev. Preparing to unpack .../mongodb-dev_1%3a2.4.9-1ubuntu2_amd64.deb ... Unpacking mongodb-dev (1:2.4.9-1ubuntu2) ... Selecting previously unselected package libsnappy1. Preparing to unpack .../libsnappy1_1.1.0-1ubuntu1_amd64.deb ... Unpacking libsnappy1 (1.1.0-1ubuntu1) ... Selecting previously unselected package mongodb-clients. Preparing to unpack .../mongodb-clients_1%3a2.4.9-1ubuntu2_amd64.deb ... Unpacking mongodb-clients (1:2.4.9-1ubuntu2) ... Selecting previously unselected package mongodb-server. Preparing to unpack .../mongodb-server_1%3a2.4.9-1ubuntu2_amd64.deb ... Unpacking mongodb-server (1:2.4.9-1ubuntu2) ... Selecting previously unselected package mongodb. Preparing to unpack .../mongodb_1%3a2.4.9-1ubuntu2_amd64.deb ... Unpacking mongodb (1:2.4.9-1ubuntu2) ... Processing triggers for man-db (2.6.7.1-1ubuntu1) ... Processing triggers for ureadahead (0.100.0-16) ... Setting up libpcap0.8:amd64 (1.5.3-2) ... Setting up libboost-system1.54.0:amd64 (1.54.0-4ubuntu3.1) ... Setting up libboost-filesystem1.54.0:amd64 (1.54.0-4ubuntu3.1) ... Setting up libboost-program-options1.54.0:amd64 (1.54.0-4ubuntu3.1) ... Setting up libboost-thread1.54.0:amd64 (1.54.0-4ubuntu3.1) ... Setting up libunwind8 (1.1-2.2ubuntu3) ... Setting up libboost1.54-dev (1.54.0-4ubuntu3.1) ... 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Processing triggers for libc-bin (2.19-0ubuntu6.6) ... root@well:/# mongo MongoDB shell version: 2.4.9 connecting to: test Fri Apr 28 16:05:29.868 Error: couldn't connect to server 127.0.0.1:27017 at src/mongo/shell/mongo.js:145 exception: connect failed root@well:/# cd /home/etc/project/nosqlmongo root@well:/home/etc/project/nosqlmongo# ls mongodb root@well:/home/etc/project/nosqlmongo# cp -R ^C root@well:/home/etc/project/nosqlmongo# mv mongodb -R /home/etc/project/nosqlmongo/mongodb_NOUSing mv: invalid option -- 'R' Try 'mv --help' for more information. root@well:/home/etc/project/nosqlmongo# mv mongodb /home/etc/project/nosqlmongo/mongodb_NOUSing root@well:/home/etc/project/nosqlmongo# ls mongodb_NOUSing root@well:/home/etc/project/nosqlmongo# cd - / root@well:/# mongo MongoDB shell version: 2.4.9 connecting to: test Fri Apr 28 16:09:24.556 Error: couldn't connect to server 127.0.0.1:27017 at src/mongo/shell/mongo.js:145 exception: connect failed root@well:/# service mongodb start * Starting database mongodb [ OK ] root@well:/# mongo MongoDB shell version: 2.4.9 connecting to: test Welcome to the MongoDB shell. For interactive help, type "help". For more comprehensive documentation, see http://docs.mongodb.org/ Questions? Try the support group http://groups.google.com/group/mongodb-user > show dbs local 0.078125GB > use wellmg switched to db wellmg > db.col.save({well:'www'}) > db.col.find(0 ... ) { "_id" : ObjectId("5902f90762277deee7287c0a"), "well" : "www" } > db.col.find() { "_id" : ObjectId("5902f90762277deee7287c0a"), "well" : "www" } > exit; root@well:/#
>db.COLLECTION_NAME.ensureIndex({KEY:1})
语法中 Key 值为你要创建的索引字段，1为指定按升序创建索引，如果你想按降序来创建索引指定为-1即可。
实例
>db.col.ensureIndex({"title":1})
>
ensureIndex() 方法中你也可以设置使用多个字段创建索引（关系型数据库中称作复合索引）。
>db.col.ensureIndex({"title":1,"description":-1})
>
ensureIndex() 接收可选参数，可选参数列表如下：
Parameter Type Description
background Boolean 建索引过程会阻塞其它数据库操作，background可指定以后台方式创建索引，即增加 "background" 可选参数。 "background" 默认值为false。
unique Boolean 建立的索引是否唯一。指定为true创建唯一索引。默认值为false.
name string 索引的名称。如果未指定，MongoDB的通过连接索引的字段名和排序顺序生成一个索引名称。
dropDups Boolean 在建立唯一索引时是否删除重复记录,指定 true 创建唯一索引。默认值为 false.
sparse Boolean 对文档中不存在的字段数据不启用索引；这个参数需要特别注意，如果设置为true的话，在索引字段中不会查询出不包含对应字段的文档.。默认值为 false.
expireAfterSeconds integer 指定一个以秒为单位的数值，完成 TTL设定，设定集合的生存时间。
v index version 索引的版本号。默认的索引版本取决于mongod创建索引时运行的版本。
weights document 索引权重值，数值在 1 到 99,999 之间，表示该索引相对于其他索引字段的得分权重。
default_language string 对于文本索引，该参数决定了停用词及词干和词器的规则的列表。 默认为英语
language_override string 对于文本索引，该参数指定了包含在文档中的字段名，语言覆盖默认的language，默认值为 language.
实例
在后台创建索引：
db.values.ensureIndex({open: 1, close: 1}, {background: true})
通过在创建索引时加background:true 的选项，让创建工作在后台执行
> db.col.find().skip(34).limit(3) > db.col.find().skip(4).limit(3) { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } { "_id" : ObjectId("590218d868f02acbb4b8d4aa"), "new-Attr" : "wset" } { "_id" : ObjectId("59021aa568f02acbb4b8d4ad"), "likes" : 123 } > db.col.find({title:{$type:2}}) { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } > db.col.save({likes:123}) WriteResult({ "nInserted" : 1 }) > db.col.find({title:{$type:2}}) { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } > db.col.save({likes:123,title:'wt'}) WriteResult({ "nInserted" : 1 }) > db.col.find({title:{$type:2}}) { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } { "_id" : ObjectId("5902245868f02acbb4b8d4b8"), "likes" : 123, "title" : "wt" } > db.col.find({title:{$type:2}}).sort(likes,-1) 2017-04-28T01:03:47.853+0800 ReferenceError: likes is not defined > db.col.find({title:{$type:2}}).sort({likes,-1}) 2017-04-28T01:04:06.038+0800 SyntaxError: Unexpected token , > db.col.find({title:{$type:2}}).sort({likes:-1}) { "_id" : ObjectId("5902245868f02acbb4b8d4b8"), "likes" : 123, "title" : "wt" } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } > db.col.find({title:{$type:2}}).sort({likes:-1}) { "_id" : ObjectId("5902245868f02acbb4b8d4b8"), "likes" : 123, "title" : "wt" } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } > db.col.find({title:{$type:2}}).sort({likes:1}) { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } { "_id" : ObjectId("5902245868f02acbb4b8d4b8"), "likes" : 123, "title" : "wt" } >
> db.col.find({'likes':'$lt:124,$gt:99'})
> db.col.find({'likes':{'$lt:124,$gt:99'}})
2017-04-28T00:38:46.204+0800 SyntaxError: Unexpected token }
> db.col.find({likes:{'$lt:124,$gt:99'}})
2017-04-28T00:39:20.266+0800 SyntaxError: Unexpected token }
> db.col.find({likes:{$lt:124,$gt:99}})
{ "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags " : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
{ "_id" : ObjectId("59021aa568f02acbb4b8d4ad"), "likes" : 123 }
> db.col.find({'likes':{$lt:124,$gt:99}})
{ "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags " : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
{ "_id" : ObjectId("59021aa568f02acbb4b8d4ad"), "likes" : 123 }
> db.col.save({23:22})
WriteResult({ "nInserted" : 1 })
> db.col.save({23:2ee2})
2017-04-28T00:53:14.354+0800 SyntaxError: Unexpected token ILLEGAL
> db.col.save({23:4543})
WriteResult({ "nInserted" : 1 })
> db.col.save({2e3:4543})
WriteResult({ "nInserted" : 1 })
> db.col.save({2e3fds:4543})
2017-04-28T00:53:35.274+0800 SyntaxError: Unexpected token ILLEGAL
> db.col.save({2e3fds4:4543})
2017-04-28T00:53:44.457+0800 SyntaxError: Unexpected token ILLEGAL
> db.col.save({2e3:4543})
WriteResult({ "nInserted" : 1 })
> db.col.save({3e3:4543})
WriteResult({ "nInserted" : 1 })
> db.col.save({3f3:4543})
2017-04-28T00:54:23.896+0800 SyntaxError: Unexpected token ILLEGAL
> db.col.save({e3:4543})
WriteResult({ "nInserted" : 1 })
> db.col.save({e3:'MATH-e'})
WriteResult({ "nInserted" : 1 })
> db.col.find()
{ "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" }
{ "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags " : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
{ "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" }
{ "_id" : ObjectId("590218d868f02acbb4b8d4aa"), "new-Attr" : "wset" }
{ "_id" : ObjectId("59021aa568f02acbb4b8d4ad"), "likes" : 123 }
{ "_id" : ObjectId("59021aa968f02acbb4b8d4ae"), "likes" : 1233 }
{ "_id" : ObjectId("59021b7d68f02acbb4b8d4af"), "23" : 34 }
{ "_id" : ObjectId("590221f568f02acbb4b8d4b0"), "23" : 22 }
{ "_id" : ObjectId("5902220168f02acbb4b8d4b1"), "23" : 4543 }
{ "_id" : ObjectId("5902220868f02acbb4b8d4b2"), "2000" : 4543 }
{ "_id" : ObjectId("5902222168f02acbb4b8d4b3"), "2000" : 4543 }
{ "_id" : ObjectId("5902223268f02acbb4b8d4b4"), "3000" : 4543 }
{ "_id" : ObjectId("5902224868f02acbb4b8d4b5"), "e3" : 4543 }
{ "_id" : ObjectId("5902225a68f02acbb4b8d4b6"), "e3" : "MATH-e" }
>
> db.col.find({'likes':100})
{ "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
> db.col.find({'likes':100},{'title':'twDOC'}})
2017-04-28T00:31:38.198+0800 SyntaxError: Unexpected token }
> db.col.find({{'likes':100},{'title':'twDOC'}})
2017-04-28T00:31:59.375+0800 SyntaxError: Unexpected token {
> db.col.find({'likes':100},{'title':'twDOC'})
{ "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all" }
{ "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all" }
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC" }
> db.col.find({'likes':100,'title':'twDOC'})
> db.col.find({'likes':100,'title':'tWDOC'})
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
> db.col.find($or:['likes':100,'title':'tWDOC'])
2017-04-28T00:33:46.213+0800 SyntaxError: Unexpected token :
> db.col.find($or:[{'likes':100},{'title':'tWDOC'}])
2017-04-28T00:34:04.657+0800 SyntaxError: Unexpected token :
> db.col.find({$or:[{'likes':100},{'title':'tWDOC'}]})
{ "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
> db.col.find({'title':'tWDOC',{$or:[{'likes':100},{'title':'tWDOC'}]}})
2017-04-28T00:35:55.494+0800 SyntaxError: Unexpected token {
> db.col.find({'title':'tWDOC',$or:[{'likes':100},{'title':'tWDOC'}]})
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
> db.col.find({'likes':'$lt:124,$gt:99'})
> db.col.find({'likes':{'$lt:124,$gt:99'}})
2017-04-28T00:38:46.204+0800 SyntaxError: Unexpected token }
> db.col.find({likes:{'$lt:124,$gt:99'}})
2017-04-28T00:39:20.266+0800 SyntaxError: Unexpected token }
> db.col.find({likes:{$lt:124,$gt:99}})
{ "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
{ "_id" : ObjectId("59021aa568f02acbb4b8d4ad"), "likes" : 123 }
> db.col.find({'likes':{$lt:124,$gt:99}})
{ "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
{ "_id" : ObjectId("59021aa568f02acbb4b8d4ad"), "likes" : 123 }
>
> db.col.find().pretty() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } { "_id" : ObjectId("590218d868f02acbb4b8d4aa"), "new-Attr" : "wset" } > db.col.save({'likes':123}) WriteResult({ "nInserted" : 1 }) > db.col.save({'likes':1233}) WriteResult({ "nInserted" : 1 }) > db.col.find('likes':'$lt 23').pretty() 2017-04-28T00:23:26.855+0800 SyntaxError: Unexpected token : > db.col.find('likes':'{$lt:23}').pretty() 2017-04-28T00:23:46.691+0800 SyntaxError: Unexpected token : > db.col.find('likes':{$lt:23}).pretty() 2017-04-28T00:24:07.976+0800 SyntaxError: Unexpected token : > db.col.find({'likes':{$lt:23}}).pretty() > db.col.find({'likes':{$lt:123}}).pretty() { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } > db.col.find({'likes':{$lt:123}}) { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } > db.col.save({23:34}) WriteResult({ "nInserted" : 1 }) > db.col.find({'likes':{$lt:123}}) { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } > db.col.find({'likes':{$lte:123}}) { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } { "_id" : ObjectId("59021aa568f02acbb4b8d4ad"), "likes" : 123 } >
w
> db.col.save({'new-Attr':'wset'})
WriteResult({ "nInserted" : 1 })
> db.col.find()
{ "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" }
{ "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 }
{ "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" }
{ "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" }
{ "_id" : ObjectId("590218d868f02acbb4b8d4aa"), "new-Attr" : "wset" }
> use wdbc
switched to db wdbc
> show dbs
admin (empty)
dbwb 0.078GB
local 0.078GB
> use wdbc
switched to db wdbc
> db.col.save({'3',234})
2017-04-28T00:15:27.998+0800 SyntaxError: Unexpected token ,
> db.col.save({'3','234'})
2017-04-28T00:15:40.150+0800 SyntaxError: Unexpected token ,
> db.col.save({'w3','234'})
2017-04-28T00:15:57.228+0800 SyntaxError: Unexpected token ,
> db.col.save({23:234})
WriteResult({ "nInserted" : 1 })
> db.col.find()
{ "_id" : ObjectId("5902195068f02acbb4b8d4ab"), "23" : 234 }
> db.col.save({23:234})
WriteResult({ "nInserted" : 1 })
> db.col.find()
{ "_id" : ObjectId("5902195068f02acbb4b8d4ab"), "23" : 234 }
{ "_id" : ObjectId("5902196468f02acbb4b8d4ac"), "23" : 234 }
> db.col.remove()
2017-04-28T00:16:49.256+0800 remove needs a query at src/mongo/shell/collection.js:299
> db.col.remove({})
WriteResult({ "nRemoved" : 2 })
> db.col.find()
> db.col.find()
> show dbs
admin (empty)
dbwb 0.078GB
local 0.078GB
wdbc 0.078GB
>
MongoDB 更新文档 | 菜鸟教程 http://www.runoob.com/mongodb/mongodb-update.html
只更新第一条记录：
db.col.update( { "count" : { $gt : 1 } } , { $set : { "test2" : "OK"} } );
全部更新：
db.col.update( { "count" : { $gt : 3 } } , { $set : { "test2" : "OK"} },false,true );
只添加第一条：
db.col.update( { "count" : { $gt : 4 } } , { $set : { "test5" : "OK"} },true,false );
全部添加加进去:
db.col.update( { "count" : { $gt : 5 } } , { $set : { "test5" : "OK"} },true,true );
全部更新：
db.col.update( { "count" : { $gt : 15 } } , { $inc : { "count" : 1} },false,true );
只更新第一条记录：
db.col.update( { "count" : { $gt : 10 } } , { $inc : { "count" : 1} },false,false );
guess the degsign
对出现的新数据的“新键”可以不对历史数据“加键”
扩展性
> db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } > db.col.update({'count':{$gt:1}},{$set:{'test2-onlyOne':'only one'}}) WriteResult({ "nMatched" : 0, "nUpserted" : 0, "nModified" : 0 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } > db.col.update({'title':'tWDOC'},{$set:{'new_field':'guess the design'}}) WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100, "new_field" : "guess the design" } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } >
> db.col.save( "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId") 2017-04-27T22:28:54.423+0800 SyntaxError: Unexpected token : > db.col.save({"_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId"}) WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-save-UPDATE-ObjectId" } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } >
> db.col.save(documentW,'5901fb94b0c1b192e67adc78') WriteResult({ "nInserted" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.update({'title':'tW-NEW'},{$set:{'title':'tw-NEW1'}}) WriteResult({ "nMatched" : 0, "nUpserted" : 0, "nModified" : 0 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.update({'title':'tW'},{$set:{'title':'tw-NEW1'}}) WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-NEW1", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.update({'title':'tW'},{$set:{'title':'tw-NEW2-all'}},{multi:true}) WriteResult({ "nMatched" : 2, "nUpserted" : 0, "nModified" : 2 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-NEW1", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.update({'title':'tW'},{$set:{'title':'tw-NEW2-all'}},{multi:true},{upsert:true}) assert failed : Fourth argument must be empty when specifying upsert and multi with an object. Error: assert failed : Fourth argument must be empty when specifying upsert and multi with an object. at Error (<anonymous>) at doassert (src/mongo/shell/assert.js:11:14) at assert (src/mongo/shell/assert.js:20:5) at DBCollection.update (src/mongo/shell/collection.js:376:9) at (shell):1:8 2017-04-27T22:23:37.593+0800 Error: assert failed : Fourth argument must be empty when specifying upsert and multi with an object. at src/mongo/shell/assert.js:13 > db.col.update({'title':'tW'},{$set:{'title':'tw-NEW2-all'}},{multi:false},{upsert:true}) assert failed : Fourth argument must be empty when specifying upsert and multi with an object. Error: assert failed : Fourth argument must be empty when specifying upsert and multi with an object. at Error (<anonymous>) at doassert (src/mongo/shell/assert.js:11:14) at assert (src/mongo/shell/assert.js:20:5) at DBCollection.update (src/mongo/shell/collection.js:376:9) at (shell):1:8 2017-04-27T22:24:59.842+0800 Error: assert failed : Fourth argument must be empty when specifying upsert and multi with an object. at src/mongo/shell/assert.js:13 > db.col.update({'title':'tW'},{$set:{'title':'tw-NEW2-all'}},{upsert:true}) WriteResult({ "nMatched" : 0, "nUpserted" : 1, "nModified" : 0, "_id" : ObjectId("5901ff607f11d64efeb3ae26") }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tw-NEW1", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tw-NEW2-all", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901ff607f11d64efeb3ae26"), "title" : "tw-NEW2-all" } >
ObjectId("5901fb94b0c1b192e67adc78") 是什么？
> show dbs admin (empty) dbw 0.078GB local 0.078GB > use dbw switched to db dbw > db.dropDatabase() { "dropped" : "dbw", "ok" : 1 } > show dbs admin (empty) local 0.078GB > use dbwb switched to db dbwb > db.col.insert({title:'tW',description:'dW',by:'byW',url:'urlW',tags:['w0','w1' ],likes:100}) WriteResult({ "nInserted" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.insert({title:'tW1',description:'dW1',by:'byW',url:'urlW',tags:['w0','w 1'],likes:100}) WriteResult({ "nInserted" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > documentW={title:'tW',description:'dW',by:'byW',url:'urlW',tags:['w0','w1'],li kes:100} { "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.insert(documentW) WriteResult({ "nInserted" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.save(documentW) WriteResult({ "nInserted" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.save(documentW,123) WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.save(documentW,'5901fb94b0c1b192e67adc78') WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > documentW={title:'tWDOC',description:'dW',by:'byW',url:'urlW',tags:['w0','w1'] ,likes:100} { "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } > db.col.save(documentW,'5901fb94b0c1b192e67adc78') WriteResult({ "nInserted" : 1 }) > db.col.find() { "_id" : ObjectId("5901fb94b0c1b192e67adc78"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fbbfb0c1b192e67adc79"), "title" : "tW1", "description" : "dW1", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc1cb0c1b192e67adc7a"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fc50b0c1b192e67adc7b"), "title" : "tW", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } { "_id" : ObjectId("5901fcb4b0c1b192e67adc7c"), "title" : "tWDOC", "description" : "dW", "by" : "byW", "url" : "urlW", "tags" : [ "w0", "w1" ], "likes" : 100 } >
apt-get update
apt-get install -y mongodb
service mongodb start
mongo mongodb mongod
Last login: Wed Apr 26 23:45:56 2017 from 218.18.215.149 ubuntu@VM-52-248-ubuntu:~$ apt-get update W: chmod 0700 of directory /var/lib/apt/lists/partial failed - SetupAPTPartialDirectory (1: Operation not permitted) E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied) E: Unable to lock directory /var/lib/apt/lists/ W: Problem unlinking the file /var/cache/apt/pkgcache.bin - RemoveCaches (13: Permission denied) W: Problem unlinking the file /var/cache/apt/srcpkgcache.bin - RemoveCaches (13: Permission denied) E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the administration directory (/var/lib/dpkg/), are you root? ubuntu@VM-52-248-ubuntu:~$ sudo apt-get update Hit:1 http://mirrors.tencentyun.com/ubuntu xenial InRelease Hit:2 http://mirrors.tencentyun.com/ubuntu xenial-security InRelease Hit:3 http://mirrors.tencentyun.com/ubuntu xenial-updates InRelease Get:4 http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease [17.6 kB] Get:5 http://repo.mysql.com/apt/ubuntu xenial InRelease [16.7 kB] Err:5 http://repo.mysql.com/apt/ubuntu xenial InRelease The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 Ign:4 http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease Fetched 34.2 kB in 5s (6187 B/s) Reading package lists... Done W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://repo.mysql.com/apt/ubuntu xenial InRelease: The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 W: GPG error: http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4F4EA0AAE5267A6C W: The repository 'http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease' is not signed. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: Failed to fetch http://repo.mysql.com/apt/ubuntu/dists/xenial/InRelease The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 W: Some index files failed to download. They have been ignored, or old ones used instead. ubuntu@VM-52-248-ubuntu:~$ sudo apt-get install -y mongodb -org E: Option -org: Configuration item specification must have an =<val>. ubuntu@VM-52-248-ubuntu:~$ sudo apt-get install -y mongodb-org Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package mongodb-org ubuntu@VM-52-248-ubuntu:~$ sudo apt-get install -y mongodb-org Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package mongodb-org ubuntu@VM-52-248-ubuntu:~$ sudo apt-get update Hit:1 http://mirrors.tencentyun.com/ubuntu xenial InRelease Hit:2 http://mirrors.tencentyun.com/ubuntu xenial-security InRelease Hit:3 http://mirrors.tencentyun.com/ubuntu xenial-updates InRelease Get:4 http://repo.mysql.com/apt/ubuntu xenial InRelease [16.7 kB] Get:5 http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease [17.6 kB] Ign:5 http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease Err:4 http://repo.mysql.com/apt/ubuntu xenial InRelease The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 Fetched 34.2 kB in 3s (9715 B/s) Reading package lists... Done W: GPG error: http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4F4EA0AAE5267A6C W: The repository 'http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease' is not signed. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://repo.mysql.com/apt/ubuntu xenial InRelease: The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 W: Failed to fetch http://repo.mysql.com/apt/ubuntu/dists/xenial/InRelease The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 W: Some index files failed to download. They have been ignored, or old ones used instead. ubuntu@VM-52-248-ubuntu:~$ try with --fix-missing No command 'try' found, did you mean: Command 'tty' from package 'coreutils' (main) Command 'tr' from package 'coreutils' (main) Command 'pry' from package 'pry' (universe) Command 'trn' from package 'trn4' (multiverse) Command 'trn' from package 'trn' (multiverse) Command 'trs' from package 'konwert' (universe) try: command not found ubuntu@VM-52-248-ubuntu:~$ sudo try with --fix-missing sudo: try: command not found ubuntu@VM-52-248-ubuntu:~$ su Password: root@VM-52-248-ubuntu:/home/ubuntu# apt-get update Hit:1 http://mirrors.tencentyun.com/ubuntu xenial InRelease Hit:2 http://mirrors.tencentyun.com/ubuntu xenial-security InRelease Hit:3 http://mirrors.tencentyun.com/ubuntu xenial-updates InRelease Get:4 http://repo.mysql.com/apt/ubuntu xenial InRelease [16.7 kB] Err:4 http://repo.mysql.com/apt/ubuntu xenial InRelease The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 Get:5 http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease [17.6 kB] Ign:5 http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease Fetched 34.2 kB in 1s (21.4 kB/s) Reading package lists... Done W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://repo.mysql.com/apt/ubuntu xenial InRelease: The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 W: GPG error: http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4F4EA0AAE5267A6C W: The repository 'http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease' is not signed. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: Failed to fetch http://repo.mysql.com/apt/ubuntu/dists/xenial/InRelease The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 W: Some index files failed to download. They have been ignored, or old ones used instead. root@VM-52-248-ubuntu:/home/ubuntu# apt-get update Hit:1 http://mirrors.tencentyun.com/ubuntu xenial InRelease Hit:2 http://mirrors.tencentyun.com/ubuntu xenial-security InRelease Hit:3 http://mirrors.tencentyun.com/ubuntu xenial-updates InRelease Get:4 http://repo.mysql.com/apt/ubuntu xenial InRelease [16.7 kB] Err:4 http://repo.mysql.com/apt/ubuntu xenial InRelease The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 Get:5 http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease [17.6 kB] Ign:5 http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease Fetched 34.2 kB in 10s (3282 B/s) Reading package lists... Done W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://repo.mysql.com/apt/ubuntu xenial InRelease: The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 W: GPG error: http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4F4EA0AAE5267A6C W: The repository 'http://ppa.launchpad.net/ondrej/mysql-5.7/ubuntu xenial InRelease' is not signed. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: Failed to fetch http://repo.mysql.com/apt/ubuntu/dists/xenial/InRelease The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 W: Some index files failed to download. They have been ignored, or old ones used instead. root@VM-52-248-ubuntu:/home/ubuntu# sudo apt-get install -y mongodb-org Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package mongodb-org root@VM-52-248-ubuntu:/home/ubuntu# sudo apt-get install -y mongodb Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: libboost-filesystem1.58.0 libboost-program-options1.58.0 libboost-system1.58.0 libboost-thread1.58.0 libgoogle-perftools4 libpcrecpp0v5 libsnappy1v5 libtcmalloc-minimal4 libunwind8 libv8-3.14.5 libyaml-cpp0.5v5 mongodb-clients mongodb-server The following NEW packages will be installed: libboost-filesystem1.58.0 libboost-program-options1.58.0 libboost-system1.58.0 libboost-thread1.58.0 libgoogle-perftools4 libpcrecpp0v5 libsnappy1v5 libtcmalloc-minimal4 libunwind8 libv8-3.14.5 libyaml-cpp0.5v5 mongodb mongodb-clients mongodb-server 0 upgraded, 14 newly installed, 0 to remove and 164 not upgraded. Need to get 58.0 MB of archives. After this operation, 196 MB of additional disk space will be used. Get:1 http://mirrors.tencentyun.com/ubuntu xenial/main amd64 libpcrecpp0v5 amd64 2:8.38-3.1 [15.2 kB] Get:2 http://mirrors.tencentyun.com/ubuntu xenial-updates/main amd64 libboost-system1.58.0 amd64 1.58.0+dfsg-5ubuntu3.1 [9146 B] Get:3 http://mirrors.tencentyun.com/ubuntu xenial-updates/main amd64 libboost-filesystem1.58.0 amd64 1.58.0+dfsg-5ubuntu3.1 [37.5 kB] Get:4 http://mirrors.tencentyun.com/ubuntu xenial-updates/main amd64 libboost-program-options1.58.0 amd64 1.58.0+dfsg-5ubuntu3.1 [138 kB] Get:5 http://mirrors.tencentyun.com/ubuntu xenial-updates/main amd64 libboost-thread1.58.0 amd64 1.58.0+dfsg-5ubuntu3.1 [47.0 kB] Get:6 http://mirrors.tencentyun.com/ubuntu xenial/main amd64 libtcmalloc-minimal4 amd64 2.4-0ubuntu5 [105 kB] Get:7 http://mirrors.tencentyun.com/ubuntu xenial/main amd64 libunwind8 amd64 1.1-4.1 [46.5 kB] Get:8 http://mirrors.tencentyun.com/ubuntu xenial/main amd64 libgoogle-perftools4 amd64 2.4-0ubuntu5 [187 kB] Get:9 http://mirrors.tencentyun.com/ubuntu xenial/universe amd64 libv8-3.14.5 amd64 3.14.5.8-5ubuntu2 [1189 kB] Get:10 http://mirrors.tencentyun.com/ubuntu xenial/universe amd64 libyaml-cpp0.5v5 amd64 0.5.2-3 [158 kB] Get:11 http://mirrors.tencentyun.com/ubuntu xenial/main amd64 libsnappy1v5 amd64 1.1.3-2 [16.0 kB] Get:12 http://mirrors.tencentyun.com/ubuntu xenial/universe amd64 mongodb-clients amd64 1:2.6.10-0ubuntu1 [48.6 MB] Get:13 http://mirrors.tencentyun.com/ubuntu xenial/universe amd64 mongodb-server amd64 1:2.6.10-0ubuntu1 [7425 kB] Get:14 http://mirrors.tencentyun.com/ubuntu xenial/universe amd64 mongodb amd64 1:2.6.10-0ubuntu1 [5112 B] Fetched 58.0 MB in 3s (16.6 MB/s) Selecting previously unselected package libpcrecpp0v5:amd64. (Reading database ... 66285 files and directories currently installed.) Preparing to unpack .../libpcrecpp0v5_2%3a8.38-3.1_amd64.deb ... Unpacking libpcrecpp0v5:amd64 (2:8.38-3.1) ... Selecting previously unselected package libboost-system1.58.0:amd64. Preparing to unpack .../libboost-system1.58.0_1.58.0+dfsg-5ubuntu3.1_amd64.deb ... Unpacking libboost-system1.58.0:amd64 (1.58.0+dfsg-5ubuntu3.1) ... Selecting previously unselected package libboost-filesystem1.58.0:amd64. Preparing to unpack .../libboost-filesystem1.58.0_1.58.0+dfsg-5ubuntu3.1_amd64.deb ... Unpacking libboost-filesystem1.58.0:amd64 (1.58.0+dfsg-5ubuntu3.1) ... Selecting previously unselected package libboost-program-options1.58.0:amd64. Preparing to unpack .../libboost-program-options1.58.0_1.58.0+dfsg-5ubuntu3.1_amd64.deb ... Unpacking libboost-program-options1.58.0:amd64 (1.58.0+dfsg-5ubuntu3.1) ... Selecting previously unselected package libboost-thread1.58.0:amd64. Preparing to unpack .../libboost-thread1.58.0_1.58.0+dfsg-5ubuntu3.1_amd64.deb ... Unpacking libboost-thread1.58.0:amd64 (1.58.0+dfsg-5ubuntu3.1) ... Selecting previously unselected package libtcmalloc-minimal4. Preparing to unpack .../libtcmalloc-minimal4_2.4-0ubuntu5_amd64.deb ... Unpacking libtcmalloc-minimal4 (2.4-0ubuntu5) ... Selecting previously unselected package libunwind8. Preparing to unpack .../libunwind8_1.1-4.1_amd64.deb ... Unpacking libunwind8 (1.1-4.1) ... Selecting previously unselected package libgoogle-perftools4. Preparing to unpack .../libgoogle-perftools4_2.4-0ubuntu5_amd64.deb ... Unpacking libgoogle-perftools4 (2.4-0ubuntu5) ... Selecting previously unselected package libv8-3.14.5. Preparing to unpack .../libv8-3.14.5_3.14.5.8-5ubuntu2_amd64.deb ... Unpacking libv8-3.14.5 (3.14.5.8-5ubuntu2) ... Selecting previously unselected package libyaml-cpp0.5v5:amd64. Preparing to unpack .../libyaml-cpp0.5v5_0.5.2-3_amd64.deb ... Unpacking libyaml-cpp0.5v5:amd64 (0.5.2-3) ... Selecting previously unselected package libsnappy1v5:amd64. Preparing to unpack .../libsnappy1v5_1.1.3-2_amd64.deb ... Unpacking libsnappy1v5:amd64 (1.1.3-2) ... Selecting previously unselected package mongodb-clients. Preparing to unpack .../mongodb-clients_1%3a2.6.10-0ubuntu1_amd64.deb ... Unpacking mongodb-clients (1:2.6.10-0ubuntu1) ... Selecting previously unselected package mongodb-server. Preparing to unpack .../mongodb-server_1%3a2.6.10-0ubuntu1_amd64.deb ... Unpacking mongodb-server (1:2.6.10-0ubuntu1) ... Selecting previously unselected package mongodb. Preparing to unpack .../mongodb_1%3a2.6.10-0ubuntu1_amd64.deb ... Unpacking mongodb (1:2.6.10-0ubuntu1) ... Processing triggers for libc-bin (2.23-0ubuntu3) ... Processing triggers for man-db (2.7.5-1) ... Processing triggers for systemd (229-4ubuntu10) ... Processing triggers for ureadahead (0.100.0-19) ... Setting up libpcrecpp0v5:amd64 (2:8.38-3.1) ... Setting up libboost-system1.58.0:amd64 (1.58.0+dfsg-5ubuntu3.1) ... Setting up libboost-filesystem1.58.0:amd64 (1.58.0+dfsg-5ubuntu3.1) ... Setting up libboost-program-options1.58.0:amd64 (1.58.0+dfsg-5ubuntu3.1) ... Setting up libboost-thread1.58.0:amd64 (1.58.0+dfsg-5ubuntu3.1) ... Setting up libtcmalloc-minimal4 (2.4-0ubuntu5) ... Setting up libunwind8 (1.1-4.1) ... Setting up libgoogle-perftools4 (2.4-0ubuntu5) ... Setting up libv8-3.14.5 (3.14.5.8-5ubuntu2) ... Setting up libyaml-cpp0.5v5:amd64 (0.5.2-3) ... Setting up libsnappy1v5:amd64 (1.1.3-2) ... Setting up mongodb-clients (1:2.6.10-0ubuntu1) ... Setting up mongodb-server (1:2.6.10-0ubuntu1) ... Adding system user `mongodb' (UID 112) ... Adding new user `mongodb' (UID 112) with group `nogroup' ... Not creating home directory `/var/lib/mongodb'. Adding group `mongodb' (GID 119) ... Done. Adding user `mongodb' to group `mongodb' ... Adding user mongodb to group mongodb Done. Setting up mongodb (1:2.6.10-0ubuntu1) ... Processing triggers for libc-bin (2.23-0ubuntu3) ... Processing triggers for systemd (229-4ubuntu10) ... Processing triggers for ureadahead (0.100.0-19) ... root@VM-52-248-ubuntu:/home/ubuntu# service mongod start Failed to start mongod.service: Unit mongod.service not found. root@VM-52-248-ubuntu:/home/ubuntu# mongod mongod --help for help and startup options 2017-04-27T21:42:57.922+0800 [initandlisten] MongoDB starting : pid=9053 port=27017 dbpath=/data/db 64-bit host=VM-52-248-ubuntu 2017-04-27T21:42:57.923+0800 [initandlisten] db version v2.6.10 2017-04-27T21:42:57.923+0800 [initandlisten] git version: nogitversion 2017-04-27T21:42:57.923+0800 [initandlisten] OpenSSL version: OpenSSL 1.0.2g 1 Mar 2016 2017-04-27T21:42:57.923+0800 [initandlisten] build info: Linux lgw01-12 3.19.0-25-generic #26~14.04.1-Ubuntu SMP Fri Jul 24 21:16:20 UTC 2015 x86_64 BOOST_LIB_VERSION=1_58 2017-04-27T21:42:57.923+0800 [initandlisten] allocator: tcmalloc 2017-04-27T21:42:57.923+0800 [initandlisten] options: {} 2017-04-27T21:42:57.929+0800 [initandlisten] exception in initAndListen: 10296 ********************************************************************* ERROR: dbpath (/data/db) does not exist. Create this directory or give existing directory in --dbpath. See http://dochub.mongodb.org/core/startingandstoppingmongo ********************************************************************* , terminating 2017-04-27T21:42:57.929+0800 [initandlisten] dbexit: 2017-04-27T21:42:57.929+0800 [initandlisten] shutdown: going to close listening sockets... 2017-04-27T21:42:57.929+0800 [initandlisten] shutdown: going to flush diaglog... 2017-04-27T21:42:57.929+0800 [initandlisten] shutdown: going to close sockets... 2017-04-27T21:42:57.929+0800 [initandlisten] shutdown: waiting for fs preallocator... 2017-04-27T21:42:57.930+0800 [initandlisten] shutdown: lock for final commit... 2017-04-27T21:42:57.930+0800 [initandlisten] shutdown: final commit... 2017-04-27T21:42:57.930+0800 [initandlisten] shutdown: closing all files... 2017-04-27T21:42:57.930+0800 [initandlisten] closeAllFiles() finished 2017-04-27T21:42:57.930+0800 [initandlisten] dbexit: really exiting now root@VM-52-248-ubuntu:/home/ubuntu# service mongod start Failed to start mongod.service: Unit mongod.service not found. root@VM-52-248-ubuntu:/home/ubuntu# service mongodb start root@VM-52-248-ubuntu:/home/ubuntu# show dbs The program 'show' can be found in the following packages: * mailutils-mh * nmh Try: apt install <selected package> root@VM-52-248-ubuntu:/home/ubuntu# mongo MongoDB shell version: 2.6.10 connecting to: test Welcome to the MongoDB shell. For interactive help, type "help". For more comprehensive documentation, see http://docs.mongodb.org/ Questions? Try the support group http://groups.google.com/group/mongodb-user > show dbs admin (empty) local 0.078GB > use local switched to db local > db.local.find().pretty() > local..col.find().pretty() 2017-04-27T21:49:24.894+0800 SyntaxError: Unexpected token . > local.col.find().pretty() 2017-04-27T21:49:33.874+0800 ReferenceError: local is not defined > db.local.find().pretty() > ; > use dbw switched to db dbw > show dbs admin (empty) local 0.078GB > show dbs admin (empty) local 0.078GB > db.dbw.insert({"namew":"helloworldw"}) WriteResult({ "nInserted" : 1 }) > show dbs admin (empty) dbw 0.078GB local 0.078GB > show tables; dbw system.indexes >
sudo apt-get install mongodb
Most Unix-like operating systems limit the system resources that a session may use. These limits may negatively impact MongoDB operation. See UNIX ulimit Settings for more information.
w
Install MongoDB Community Edition on Ubuntu — MongoDB Manual 3.4
https://docs.mongodb.com/master/tutorial/install-mongodb-on-ubuntu
Linux 平台安装 MongoDB | 菜鸟教程
http://www.runoob.com/mongodb/mongodb-linux-install.html
curl
well@well:/home/etc/project$ ls centossave centossaveb well@well:/home/etc/project$ mkdir nosqlmongo well@well:/home/etc/project$ cd nosqlmongo well@well:/home/etc/project/nosqlmongo$ cd .. well@well:/home/etc/project$ ll total 0 drwxr-xr-x. 5 well well 61 Apr 27 18:43 ./ drwxr-xr-x. 1 well well 21 Apr 18 04:09 ../ drwxrwxr-x. 4 well well 36 Apr 25 23:31 centossave/ drwxrwxr-x. 4 well well 36 Apr 26 00:32 centossaveb/ drwxrwxr-x. 2 well well 6 Apr 27 18:43 nosqlmongo/ well@well:/home/etc/project$ cd - /home/etc/project/nosqlmongo well@well:/home/etc/project/nosqlmongo$ ls well@well:/home/etc/project/nosqlmongo$ curl -O https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.0.6.tgz % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed
redis 命令
权限认证
数据类型：列表list 集合set
[root@hadoop3 ~]# redis-cli
127.0.0.1:6379> RANDOMKEY
(error) NOAUTH Authentication required.
127.0.0.1:6379> RANDOMKEY
(error) NOAUTH Authentication required.
127.0.0.1:6379> auth(mypwd)
(error) ERR unknown command 'auth(mypwd)'
127.0.0.1:6379> AUTH mypwd
OK
127.0.0.1:6379> RANDOWKEY
(error) ERR unknown command 'RANDOWKEY'
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_new"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_new"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_new"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> LPUSH mtmp we
(integer) 1
127.0.0.1:6379> LPUSH mtmp we1
(integer) 2
127.0.0.1:6379> LPUSH mtmp we2
(integer) 3
127.0.0.1:6379> LPUSH mtmp we3
(integer) 4
127.0.0.1:6379> RANDOMKEY
"mtmp"
127.0.0.1:6379> RANDOMKEY
"mtmp"
127.0.0.1:6379> RANDOMKEY
"mtmp"
127.0.0.1:6379> RANDOMKEY
"mtmp"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_new"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> RANDOMKEY
"mtmp"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_new"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_old"
127.0.0.1:6379> RANDOMKEY
"http://www.tz1288.com/_new"
127.0.0.1:6379> SADD mtmp1 u0
(integer) 1
127.0.0.1:6379> SADD mtmp1 u1
(integer) 1
127.0.0.1:6379> SADD mtmp1 u0
(integer) 0
127.0.0.1:6379> LPUSH mtmp we
(integer) 5
127.0.0.1:6379> LPUSH mtmp we
(integer) 6
127.0.0.1:6379> SADD mtmp u0
(error) WRONGTYPE Operation against a key holding the wrong kind of value
127.0.0.1:6379> SADD mtmp1 u0
(integer) 0
127.0.0.1:6379> SADD mtmp1 u02
(integer) 1
127.0.0.1:6379>
REmote DIctionary Server(Redis) 是一个由Salvatore Sanfilippo写的key-value存储系统。
Redis是一个开源的使用ANSI C语言编写、遵守BSD协议、支持网络、可基于内存亦可持久化的日志型、Key-Value数据库，并提供多种语言的API。
它通常被称为数据结构服务器，因为值（value）可以是 字符串(String), 哈希(Map), 列表(list), 集合(sets) 和 有序集合(sorted sets)等类型。
删除key
127.0.0.1:6379> del mtmp1
pymongo 的增删 更新 模糊匹配
from pymongo import * import time, logging, os start_time = time.strftime('%Y%m%d_%H%M%S', time.localtime(time.time())) os_sep = os.sep this_file_abspath, this_file_name = os.path.dirname(os.path.abspath(__file__)), os.path.abspath(__file__).split(os_sep)[ -1] logf = time.strftime('%Y%m%d', time.localtime(time.time())) + this_file_name + '.log' try: logging.basicConfig(level=logging.INFO, format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s[thread:%(thread)d][process:%(process)d]', datefmt='%a, %d %b %Y %H:%M:%S', filename=logf, filemode='a') except Exception as e: s = '%s%s%s' % ('logging.basicConfig EXCEPTION ', time.strftime('%Y%m%d_%H%M%S', time.localtime(time.time())), e) with open(logf, 'a') as fo: fo.write(s) os._exit(4002) logging.info('START') ''' 字段构成 stdClass Object ( [_id] => MongoDBBSONObjectID Object ( [oid] => 59b73dbd930c17474ff3959a ) [address] => www.ailaba.org/sell/184481750757937.html [pv] => 64 [expire_time] => 1513647257 [title] => 大马力车用柴油机油、山东润滑油厂家哪家好、柴油机油-爱喇叭网 [unit_id] => 16180 [uid] => 50003510 [status] => 0 ) ===》 0 ，可能缺失，投放中---- unit_id 物料id ''' db = 'direct_vote_resource' mongo_k_l = ['10.10.10.152', 'admin', '123', db] # inner mongo_k_l[0] = '{}{}{}'.format('mongodb://', mongo_k_l[0], ':27017/') is_test = True is_test = False if is_test: mongo_k_l = ['192.168.35.90', 'admin', 'admin', db] def gen_mongo_client_db(db_=db): ''' 避免连接超时 注意socket污染 :param db_: :return: ''' h, u, p, db = mongo_k_l myclient = MongoClient(host=h, username=u, password=p, authMechanism='SCRAM-SHA-1') return myclient[db_] def select_to_dic(k, collection_name, database=gen_mongo_client_db(), filter={}, fields={}): ''' :param k: dict[k] :param collection_name: :param database: :param filter: :param fields: :return: dict ''' collection, r = database[collection_name], {} if fields == {}: cursor = collection.find(filter) else: cursor = collection.find(filter, fields) try: c = 0 for doc in cursor: r[doc[k]] = doc c += 1 if c > 10: break finally: cursor.close() return r collection_name = 'kwaddress' ''' TODO 2018年5月22日 10:47:18 expire_time 0，1字段含义不明，假定其他值为合法时间戳，mogo数据不断更新中 ''' def chk(res_dic_k='address', fields_d={'address': 1}, filter_d={'address': {'$regex': '/m/'}, 'expire_time': {'$lte': int(time.time())}}): ''' read :param res_dic_k: :param fields_d: :param filter_d: :return:debug info ''' res = select_to_dic(res_dic_k, collection_name, fields=fields_d, filter=filter_d) print(res) for i in res: print(i) print(res[i]) chk() ''' 删除1个 pymongo 模糊搜索，不使用正则 python调用pymongo模糊正则查询的方法 - CSDN博客 https://blog.csdn.net/linuxpassion/article/details/52207630 # result = collection.delete_one({'address': {'$regex': '/m/'}}) # print(result) # print(result.deleted_count) # # result = collection.delete_one({'address': {'$regex': '/m/'}, 'expire_time': {'$lte': int(time.time())}}) # print(result) ''' ''' 批量删除 ''' is_to_run = True # is_to_run = False if is_to_run: myclient_db = gen_mongo_client_db() collection = myclient_db[collection_name] timestamp_ = int(time.time()) + 180 # 预估执行180秒，提前删除 filter_d = {'address': {'$regex': '/m/'}, 'expire_time': {'$lte': timestamp_}} result = collection.delete_many(filter_d) logging.info(filter_d) logging.info(result) logging.info(result.deleted_count) chk() print('------------------------') for rp in range(2): myclient_db = gen_mongo_client_db() collection = myclient_db[collection_name] # 计数 # 要统计查询结果有多少条数据，可以调用count()方法，如统计所有数据条数： filter_d = {'address': {'$regex': '/m/'}} res = collection.find(filter_d) # len=len(res) 0# object of type 'Cursor' has no len() count = res.count() print(count) logging.info(res) c_ = 0 for i in res: print(i) condition_d, udp_val_d = {'_id': i['_id']}, { '$set': {'address': i['address'].replace('/m/', '/')}} try: collection.update_one(condition_d, udp_val_d) logging.info(condition_d) logging.info(udp_val_d) c_ += 1 except Exception as e: print(e) logging.exception(e) s = '{}/{}'.format(c_, count) print(s) logging.info(s) print('chk') myclient_db = gen_mongo_client_db() collection = myclient_db[collection_name] res = collection.find_raw_batches({'address': {'$regex': '/m/'}}) for i in res: print(i)