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  • sql 双层游标嵌套

       --创建存储数据临时表

      CREATE TABLE Temp_Dep(TEMP_depid varchar(50),TEMP_depname VARCHAR(50),TEMP_NAME varchar(5000))

       --向临时表中插入前三列数据

       INSERT INTO Temp_Dep(TEMP_depid,TEMP_depname) SELECT DISTINCT A.DEPT_NO,B.DEPT_NOTE FROM dbo.HES_EMPLOYEE A JOIN dbo.HES_DEPT

      B ON A.DEPT_NO = B.DEPT_NO WHERE STATUS IN ('zaizhi','shiyong')

        --创建查询小组编号的游标

        DECLARE Somedepid_cusor CURSOR FOR

        SELECT DISTINCT TEMP_depid FROM Temp_Dep

       OPEN  Somedepid_cusor

       FETCH NEXT FROM Somedepid_cusor INTO @TEMP_depid

       WHILE @@FETCH_STATUS=0

       BEGIN

            --创建查询员工数据游标

            SET @TEMP_SomeNAME=''

            DECLARE SomeNAME_cusor CURSOR FOR

             SELECT NAME FROM dbo.HES_EMPLOYEE WHERE DEPT_NO=@TEMP_depid AND STATUS IN ('zaizhi','shiyong')

            OPEN  SomeNAME_cusor

            FETCH NEXT FROM SomeNAME_cusor INTO @TEMP_NAME

            WHILE @@FETCH_STATUS=0

            BEGIN

                SET  @TEMP_SomeNAME=RTRIM(@TEMP_SomeNAME)+RTRIM(@TEMP_NAME)+','

                FETCH NEXT FROM SomeNAME_cusor INTO @TEMP_NAME

            END

            CLOSE SomeNAME_cusor

            DEALLOCATE SomeNAME_cusor

           --更新数据

          UPDATE dbo.Temp_Dep SET TEMP_NAME=@TEMP_SomeNAME WHERE TEMP_depid=@TEMP_depid

          FETCH NEXT FROM Somedepid_cusor INTO @TEMP_depid

       END

       CLOSE Somedepid_cusor

       DEALLOCATE Somedepid_cusor

      --查询数据

       SELECT * FROM Temp_Dep

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  • 原文地址:https://www.cnblogs.com/dekevin/p/2493478.html
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