以下demo均以python2中的mysqldb模块
一、插入数据
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import MySQLdb conn = MySQLdb.connect(host = '127.0.0.1' ,user = 'root' ,passwd = '1234' ,db = 'mydb' ) cur = conn.cursor() reCount = cur.execute( 'insert into UserInfo(Name,Address) values(%s,%s)' ,( 'alex' , 'usa' )) # reCount = cur.execute('insert into UserInfo(Name,Address) values(%(id)s, %(name)s)',{'id':12345,'name':'wupeiqi'}) conn.commit() cur.close() conn.close() print reCount |
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import MySQLdb conn = MySQLdb.connect(host='127.0.0.1',user='root',passwd='1234',db='mydb') cur = conn.cursor() li =[ ('alex','usa'), ('sb','usa'), ] reCount = cur.executemany('insert into UserInfo(Name,Address) values(%s,%s)',li) conn.commit() cur.close() conn.close() print reCount 批量插入数据
二、删除数据
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import MySQLdb conn = MySQLdb.connect(host = '127.0.0.1' ,user = 'root' ,passwd = '1234' ,db = 'mydb' ) cur = conn.cursor() reCount = cur.execute( 'delete from UserInfo' ) conn.commit() cur.close() conn.close() print reCount |
三、修改数据
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import MySQLdb conn = MySQLdb.connect(host = '127.0.0.1' ,user = 'root' ,passwd = '1234' ,db = 'mydb' ) cur = conn.cursor() reCount = cur.execute( 'update UserInfo set Name = %s' ,( 'alin' ,)) conn.commit() cur.close() conn.close() print reCount |
四、查数据
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# ############################## fetchone/fetchmany(num) ############################## import MySQLdb conn = MySQLdb.connect(host = '127.0.0.1' ,user = 'root' ,passwd = '1234' ,db = 'mydb' ) cur = conn.cursor() reCount = cur.execute( 'select * from UserInfo' ) print cur.fetchone() print cur.fetchone() cur.scroll( - 1 ,mode = 'relative' ) print cur.fetchone() print cur.fetchone() cur.scroll( 0 ,mode = 'absolute' ) print cur.fetchone() print cur.fetchone() cur.close() conn.close() print reCount # ############################## fetchall ############################## import MySQLdb conn = MySQLdb.connect(host = '127.0.0.1' ,user = 'root' ,passwd = '1234' ,db = 'mydb' ) #cur = conn.cursor(cursorclass = MySQLdb.cursors.DictCursor) cur = conn.cursor() reCount = cur.execute( 'select Name,Address from UserInfo' ) nRet = cur.fetchall() cur.close() conn.close() print reCount print nRet for i in nRet: print i[ 0 ],i[ 1 ] |