Python sqlite3数据的增删改查

import sqlite3

连接一个数据库，没有的话会自动创建

conn = sqlite3.connect('test6.db')
print "Opened database successfully";

创建一个游标
c = conn.cursor()

创建一张表
c.execute('''CREATE TABLE COMPANY
       (ID INT PRIMARY KEY     NOT NULL,
       NAME           TEXT    NOT NULL,
       AGE            INT     NOT NULL,
       ADDRESS        CHAR(50),
       SALARY         REAL);''')
print "Table created successfully";

往表里面插入数据
c.execute("INSERT INTO COMPANY (ID,NAME,AGE,ADDRESS,SALARY) \
      VALUES (1, 'Paul', 32, 'California', 20000.00 )");

c.execute("INSERT INTO COMPANY (ID,NAME,AGE,ADDRESS,SALARY) \
      VALUES (2, 'Allen', 25, 'Texas', 15000.00 )");

c.execute("INSERT INTO COMPANY (ID,NAME,AGE,ADDRESS,SALARY) \
      VALUES (3, 'Teddy', 23, 'Norway', 20000.00 )");

c.execute("INSERT INTO COMPANY (ID,NAME,AGE,ADDRESS,SALARY) \
      VALUES (4, 'Mark', 25, 'Rich-Mond ', 65000.00 )");

删除表里面的数据
c.execute("DELETE FROM COMPANY WHERE ID=4")
c.execute("DELETE FROM COMPANY WHERE ID=3")

更改表里面的数据
c.execute("UPDATE COMPANY SET  ID=99  WHERE ID=2")

查询表里面的数据
cursor = c.execute("SELECT id, name, address, salary  from COMPANY")
for row in cursor:
   print "ID = ", row[0]
   print "NAME = ", row[1]
   print "ADDRESS = ", row[2]
   print "SALARY = ", row[3], "\n"
conn.commit()
conn.close()