Sql server 2008 创建存储过程以修改行（若存在），若不存在，则将新行插入表中

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如何创建一个存储过程来根据Id和Name参数更新Std_课程的列，或者在Id和Name不存在的情况下插入新行

CREATE PROCEDURE dbo.proc_InsertOrUpdate
    @ID INT, @Name VARCHAR(50), @StdCourse INT
AS 

    IF EXISTS (SELECT * FROM dbo.YourTable WHERE ID = @ID AND Name = @Name)

        UPDATE dbo.YourTable
        SET Std_course = @StdCourse
        WHERE ID = @ID AND Name = @Name

    ELSE    

        INSERT INTO dbo.YourTable(ID, Name, Std_Course)
        VALUES(@ID, @Name, @StdCourse

CREATE PROCEDURE dbo.proc_InsertOrUpdate
    @ID INT, @Name VARCHAR(50), @StdCourse INT
AS 
    MERGE dbo.YourTable AS t
    USING (SELECT @ID, @Name, @StdCourse) AS Source(ID, NAME, Std_Course) 
    ON source.ID = t.ID AND source.Name = t.Name

    WHEN MATCHED THEN
        UPDATE SET Std_Course = @StdCourse

    WHEN NOT MATCHED THEN
        INSERT(ID, Name, Std_Course)
        VALUES(source.ID, source.Name, source.Std_Course);

更新：因为您使用的是SQL Server 2008，所以还可以使用一个简单的

MERGE

语句-直接“内联”或在存储过程内部。它看起来像这样：

CREATE PROCEDURE dbo.proc_InsertOrUpdate
    @ID INT, @Name VARCHAR(50), @StdCourse INT
AS 

    IF EXISTS (SELECT * FROM dbo.YourTable WHERE ID = @ID AND Name = @Name)

        UPDATE dbo.YourTable
        SET Std_course = @StdCourse
        WHERE ID = @ID AND Name = @Name

    ELSE    

        INSERT INTO dbo.YourTable(ID, Name, Std_Course)
        VALUES(@ID, @Name, @StdCourse

CREATE PROCEDURE dbo.proc_InsertOrUpdate
    @ID INT, @Name VARCHAR(50), @StdCourse INT
AS 
    MERGE dbo.YourTable AS t
    USING (SELECT @ID, @Name, @StdCourse) AS Source(ID, NAME, Std_Course) 
    ON source.ID = t.ID AND source.Name = t.Name

    WHEN MATCHED THEN
        UPDATE SET Std_Course = @StdCourse

    WHEN NOT MATCHED THEN
        INSERT(ID, Name, Std_Course)
        VALUES(source.ID, source.Name, source.Std_Course);

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不需要存储过程，只需使用

MERGE

@a\u horse\u和\u No\u名称：如果他在SQL Server 2008或更高版本上

MERGE

在2000年或2005年都不存在……@marc_s：如果有人没有提到这个版本，我认为它是当前版本。是的，它是SQL Server 2008