Question

是否可以为SELECT中的每一行执行存储过程？这只执行第一行，查找要为所有行执行的操作：

    Declare 
        @Loop bit = 1, @ID int, @Exists bit, @ReturnValue bit = 0

    WHILE (@Loop) = 1
        BEGIN

            SELECT @ID = ID FROM Table --Multiple Rows Returned

            EXEC [dbo].[StoredProc1] --Exec SP for Each Row
                @InputID = @ID
                ,@Exists = @Exists OUTPUT

            IF @Exists = 1 
                 BEGIN
                     SET @Loop = 0
                     SET @ReturnValue = 1
                 END

        END

    SELECT @ReturnValue [ReturnValue]

Answer 1

使用光标：

DECLARE @exists     bit
DECLARE db_cursor   CURSOR FOR  
SELECT  ID 
FROM    Table

OPEN    db_cursor   
FETCH NEXT FROM db_cursor INTO @ID   

WHILE @@FETCH_STATUS = 0   
BEGIN   
       EXEC [dbo].[StoredProc1] --Exec SP for Each Row
            @ID
            , @exists OUTPUT  

       FETCH NEXT FROM db_cursor INTO @id   
END   

CLOSE db_cursor   
DEALLOCATE db_cursor

在SELECT语句中为每行执行带有OUTPUT的存储过程

1 个答案: