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  • SQL server触发器中 update insert delete 分别给写个例子被

    INSERT:

     表1 (ID,NAME)
     表2 (ID,NAME)
     当用户插入表1数据后,表2也被插入相同的数据

    CREATE TRIGGER TRI1
    ON 表1
    FOR INSERT
    AS
    BEGIN 
        INSERT INTO 表2 SELECT * FROM INSERTED
    END
    GO

    DELETE:

    表1 (ID,NAME)
    表2 (ID,AGE,GENDER)
    当用户删除表1某条ID的数据后,表2相应ID的数据也被删除

    CREATE TRIGGER TRI2 ON 表1
    FOR DELETE
    AS
    BEGIN 
        DECLARE @id INT
        SELECT @id FROM DELETED   
        
        DELETE 表2 
        WHERE ID = @id
    
    END
    
    GO

     

    UPDATE:

    表1 (ID,NAME)
    表2 (ID,NAME)
    当用户更改表1 NAME列数据后,表2相应ID的数据也同时更新

    CREATE TRIGGER TRI3
    ON 表1
    FOR UPDATE
    AS
    IF UPDATE(NAME)
    BEGIN
        UPDATE 表2
        SET A.NAME =  B.NAME
        FROM 表2 A, INSERTED B
        WHERE A.ID = B.ID
    END
    GO
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  • 原文地址:https://www.cnblogs.com/karkash/p/12269907.html
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