SQL中SELECT INTO和INSERT INTO SELECT语句

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1.INSERT INTO SELECT语句

1.创建测试表

    create TABLE Table1
    (
        a varchar(10),
        b varchar(10),
        c varchar(10),
        CONSTRAINT [PK_Table1] PRIMARY KEY CLUSTERED
        (
            a ASC
        )
    ) ON [PRIMARY]

    create TABLE Table2
    (
        a varchar(10),
        c varchar(10),
        d int,
        CONSTRAINT [PK_Table2] PRIMARY KEY CLUSTERED
        (
            a ASC
        )
    ) ON [PRIMARY]
    GO
    --2.创建测试数据
    Insert into Table1 values('赵','asds','90')
    Insert into Table1 values('钱','asds','100')
    Insert into Table1 values('孙','asds','80')
    Insert into Table1 values('李','asds',null)
    GO
    select * from Table2

    --3.INSERT INTO SELECT语句复制表数据
    Insert into Table2(a, c, d) select a,c,5 from Table1
    GO

    --4.显示更新后的结果
    select * from Table2
    GO
    --5.删除测试表
    drop TABLE Table1

drop TABLE Table2

2.SELECT INTO FROM语句

1.创建测试表
    create TABLE Table1
    (
        a varchar(10),
        b varchar(10),
        c varchar(10),
        CONSTRAINT [PK_Table1] PRIMARY KEY CLUSTERED
        (
            a ASC
        )
    ) ON [PRIMARY]
    GO

    --2.创建测试数据
    Insert into Table1 values('赵','asds','90')
    Insert into Table1 values('钱','asds','100')
    Insert into Table1 values('孙','asds','80')
    Insert into Table1 values('李','asds',null)
    GO

    --3.SELECT INTO FROM语句创建表Table2并复制数据
    select a,c INTO Table2 from Table1
    GO

    --4.显示更新后的结果
    select * from Table2
    GO
    --5.删除测试表
    drop TABLE Table1
    drop TABLE Table2

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