# -*- coding: utf-8 -*- import sqlite3 def mykey(x): return x[3] conn=sqlite3.connect("D:\\demo\\my_db.db") sql = "CREATE TABLE IF NOT EXISTS mytb ( a char , b int , c real, d DATE)" # a char , b int , c real 表示该表有三个字段， # a 是字符串类型， b 是整数类型, c 是实数类型。 conn.execute( sql ) cs = conn.cursor() #cs.execute("DELETE FROM mytb WHERE A='张三' ") cs.execute("DELETE FROM mytb ") #删除所有记录 ''''' cs.execute( "INSERT INTO mytb ( a,b,c,d ) values('Zhang San',25, 120, '2014-03-04')" ) cs.execute( "INSERT INTO mytb ( a,b,c,d ) values( 'Wang Wu',24, 110, '2014-05-01')" ) cs.execute( "INSERT INTO mytb ( a,b,c,d ) values( 'Li Si',23, 130, '2014-04-06')" ) ''' #批量注入，batchdata是一个列表，列表里每一个元素都是一个元组 batchdata=[('Zhang San',25, 120, '2014-03-04'), ( 'Wang Wu',24, 110, '2014-05-01'), ( 'Li Si',23, 130, '2014-04-06')] cs.executemany('INSERT INTO mytb values (?,?,?,?)',batchdata) conn.commit() #将加入的记录保存到磁盘，非常重要！ cs.execute("SELECT name, sql FROM sqlite_master WHERE type='table'") recs = cs.fetchall( ) print ( recs ) cs.execute( "SELECT * FROM mytb ")#打开数据表 recs = cs.fetchall()#取出所有记录 print ( "there is ", len(recs)," notes." ) print recs recs.sort(key = mykey) print recs cs.close() conn.close() |