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    /****** Script for SelectTopNRows command from SSMS  ******/
    
    alter PROCEDURE QueryWeight
     @myResult NVARCHAR(MAX) OUTPUT
    AS
    BEGIN
    
    IF((SELECT COUNT(column_name) FROM myWeight WHERE fname = '曲宗雪' and 查看 = '1') < 2)
    BEGIN
    SET @myResult = (SELECT column_name FROM  myWeight WHERE fname = '曲宗雪' and 查看 = '1')
    END
    ELSE
    BEGIN
    DECLARE  myCursor CURSOR
    FOR
    (
    select column_name
      from myweight
      where fname = '曲宗雪' and 查看 = '1'
      )
    DECLARE @myItem NVARCHAR(MAX)
    DECLARE @myTemp NVARCHAR(256)
    open  myCursor
    fetch next from myCursor into @myItem
    
    while(@@FETCH_STATUS = 0)
    begin
         FETCH NEXT FROM myCursor INTO @myTemp
        SET @myItem = @myItem + ',' + @myTemp
        SET @myTemp = ''
    end
        close myCursor
        DEALLOCATE myCursor
        set @myResult = @myItem
    END
    
    
    END
    
    
    
    DECLARE @theResult NVARCHAR(MAX)
    EXEC QueryWeight @theResult output
    
    declare @mySql nvarchar(max)
    
    set @mySql = 'select ' + @theResult + ' from MyTestView'
    set @mySql = REPLACE(@mySql,', from',' from')
    exec sp_executesql @mySql
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  • 原文地址:https://www.cnblogs.com/armanda/p/3634300.html
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