【hbase】hbase的基本使用

连接hbase

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进入hbase目录：cd /***/CDH-5.13.0-1.cdh5.13.0.p0.29/bin

执行命令：./hbase shell

 

基本操作命令

1. 查看所有的表：list
   创建表：create <tablename>,<colFamily1>,<colFamily2>
   Eg.create "yctest3","baseinfo","schoolinfo"
2. 查看表信息:describe <tablename>
   Eg. describe "yctest3"插入数据（一次只能插入一列）：
   put <tablename>,<rowkey>,<colFamily:col>,value
   Eg. put "yctest3",001,"baseinfo:id",1
   put "yctest3",001,"baseinfo:name","xiaoming"
   put "yctest3",001,"schoolinfo:schoolname","mingyuexiaoxue"
   put "yctest3",001,"schoolinfo:classname","三年一班"
   put "yctest3",002,"baseinfo:id",2
   put "yctest3",002,"baseinfo:name","xiaohua"
   put "yctest3",002,"schoolinfo:schoolname","mingyuexiaoxue"
   put "yctest3",002,"schoolinfo:classname","三年二班"
3. 查询插入的数据
   查询某一行的数据:  get "yctest3",001
   查询指定列族的一行数据：get "yctest3",001,"baseinfo"
   查询指定列族的某一列的一行数据：get "yctest3",001,"baseinfo:id"
   查询所有行：scan "yctest3"查询某一列族的所有数据：scan "yctest3",{COLUMN=>"baseinfo"}
   查询多列族的所有数据：scan "yctest3",{COLUMN=>["baseinfo","schoolinfo"]}
   查询多列族的某些列的数据：scan "yctest3",{COLUMN=>["baseinfo:name","schoolinfo:classname"]}
   从第3行开始查询多列族的某些列的数据：scan "yctest3",{COLUMN=>["baseinfo:name","schoolinfo:schoolname"],STARTROW=>'3'}
   查询第三行之前多列族的某些列的数据：scan "yctest3",{COLUMN=>["baseinfo:name","schoolinfo:schoolname"],STOPROW=>'3'}
   查询第二行到第四行多列族的某些列的数据(左闭右开,开始包含，结束不包含)：scan "yctest3",{COLUMN=>["baseinfo:name","schoolinfo:schoolname"],STARTROW=>'2',STOPROW=>'5'}
   查询多列族的某些列的两条数据(REVERSED => false)：scan "yctest3",{COLUMN=>["baseinfo:name","schoolinfo:schoolname"],LIMIT=>2}
   倒序查询多列族的某些列的两条数据：scan "yctest3",{COLUMN=>["baseinfo:name","schoolinfo:schoolname"],LIMIT=>2,REVERSED=>TRUE}
4. 更新数据,同插入语法，只是把需要修改的rowkey，列族写清楚，然后值写成最新的数据就可以
   put "yctest3",001,"baseinfo:name","xiaoming1"
5. 添加列族
   alter "yctest3","friendsinfo"
6. 删除数据
   删除某一列的数据：delete "yctest3",001,"baseinfo:name1"
   删除第一行的数据：deleteall "yctest3",001
   删除整张表的数据：truncate "yctest3"
7. 执行hbase脚本
   新建脚本文件 tb_yctest4：

create 'yctest4','column_family_1', 'column_family_2', 'column_family_3'

put 'yctest4','key_1','column_family_1:column_1','value1'

put 'yctest4','key_1','column_family_1:column_2','value2'

put 'yctest4','key_2','column_family_1:column_1','value4'

put 'yctest4','key_2','column_family_1:column_2','value5'

put 'yctest4','key_3','column_family_1:column_2','value5'

put 'yctest4','key_4','column_family_1:column_1','value1'

put 'yctest4','key_4','column_family_2:column_3','value3'

put 'yctest4','key_4','column_family_3:','value1'

put 'yctest4','key_4','column_family_3:','value1'

put 'yctest4','key_5','column_family_1:column_1','value1'

put 'yctest4','key_5','column_family_2:column_3','value4'

put 'yctest4','key_5','column_family_3:','value2'

执行该文件： ./hbase shell tb_yctest4

执行成功