派生表中的嵌套游标不再运行

Question

光标运行一次并更新1值，应该运行多次。

sql server：值x具有一个id，我想将此ID用于值x与表中第二个值x之间的所有记录

示例

1 x 200 2年null 3年null 4 x 300 5年null 6年null

应该是 1 x 200 2年200 3年200 4 x 300 5年300 6年300

--truncate table #temp1

--select  IDENTITY(int, 1, 1) AS RowID, nr *1 AS NR, '' updated 
-- into #temp2 
--  FROM [database].[schema].[table] 
--  where seq_nr = 20
--select * from #temp2

 DECLARE @FIRST          NVARCHAR(MAX) 
 DECLARE @LAST           NVARCHAR(MAX) 
 DECLARE @MAX_SEQ_GROEP  NVARCHAR(MAX) 

DECLARE outer_cursor CURSOR 

FOR 

SELECT [SEQ_NR_Group], FIRST_NUM, LAST_NUM 

FROM (
(select 'A' T , Min(nr) FIRST_NUM  from #temp2  where updated = '' )A FULL JOIN 
(SELECT  'A' T ,NR LAST_NUM FROM    #TEMP2  
                            WHERE   RowID IN (
                             select RowID +1 LAST_NUM 
                             from   #temp2 
                             WHERE   NR IN (  select Min(nr) FIRST_NUM
                             from   #temp2 
                             where  updated = '')
                                  AND  updated = ''))B ON a.T=B.T
                                  FULL JOIN (
                            SELECT 'A' T , MAX([SEQ_NR_Group])[SEQ_NR_Group] FROM (
                            SELECT DISTINCT CASE WHEN [SEQ_NR_Group] IS NULL THEN 1 ELSE MAX([SEQ_NR_Group])+1 END  [SEQ_NR_Group] 
                            FROM [database].[schema].[table] 
                            GROUP BY [SEQ_NR_Group])a  ) C           ON C.T=A.T         

                                                                ) 

                                SET @MAX_SEQ_GROEP = (SELECT MAX([SEQ_NR_Group]) FROM (
                                                                                    SELECT DISTINCT CASE WHEN [SEQ_NR_Group] IS NULL THEN 1 ELSE MAX([SEQ_NR_Group])+1 END  [SEQ_NR_Group] 
                                                                                    FROM [database].[schema].[table] 
                                                                                    GROUP BY [SEQ_NR_Group])a)

  OPEN outer_cursor 
FETCH NEXT FROM outer_cursor  INTO @MAX_SEQ_GROEP, @FIRST , @LAST
WHILE (@@FETCH_STATUS <> -1)
Begin ------------------------------------------> begin3
IF (@@FETCH_STATUS <> -2)
        print  @MAX_SEQ_GROEP  
        Print @FIRST  
        print  @LAST
Begin ------------------------------------------> begin2
 DECLARE INNER_CURSOR CURSOR LOCAL
        FOR 
  SELECT * FROM (SELECT [SEQ_NR_Group], FIRST_NUM, LAST_NUM 

   FROM (
   (select 'A' T , Min(nr) FIRST_NUM  from #temp2  where updated = '' )A FULL 
   JOIN 
   (SELECT  'A' T ,NR LAST_NUM FROM #TEMP2  WHERE   RowID IN (
                             select RowID +1 LAST_NUM 
                             from #temp2 
                             WHERE NR IN (  select Min(nr) FIRST_NUM
                             from #temp2 
                             where updated = '')
                              AND  updated = ''))B ON a.T=B.T
                                  FULL JOIN (
SELECT 'A' T , MAX([SEQ_NR_Group])[SEQ_NR_Group] FROM (
SELECT DISTINCT CASE WHEN [SEQ_NR_Group] IS NULL THEN 1 ELSE MAX([SEQ_NR_Group])+1 END  [SEQ_NR_Group] 
FROM [database].[schema].[table] 
GROUP BY [SEQ_NR_Group])a  ) C           ON C.T=A.T         

                                  ) ) subquery
        WHERE [SEQ_NR_Group] = @MAX_SEQ_GROEP
        AND FIRST_NUM = @FIRST 
        ANd LAST_NUM = @LAST

        FOR UPDATE 

        OPEN INNER_CURSOR 

        FETCH NEXT FROM INNER_CURSOR 
        print  @FIRST print @last
         WHILE (@@FETCH_STATUS <> -1)
        Begin ------------------------------------------> begin1
        IF (@@FETCH_STATUS <> -2)
        begin
         UPDATE [database].[schema].[table] 
          SET [SEQ_NR_Group] = @MAX_SEQ_GROEP
         where 1=1
          and NR BETWEEN @FIRST AND @LAST-1


          UPDATE #temp2
          SET    updated=1
          WHERE  NR=@FIRST
        end  ------------------------------------------> End 1
        FETCH NEXT FROM INNER_CURSOR 
        END ------------------------------------------> End 2
        CLOSE INNER_CURSOR
        DEALLOCATE INNER_CURSOR
 Print 'done inner_cursor'
 End ------------------------------------------> End 3
 FETCH NEXT FROM outer_cursor  INTO @MAX_SEQ_GROEP, @FIRST , @LAST
---here should run again and to update the next subset in the table. 

  End ------------------------------------------> End 4
  CLOSE outer_cursor;

  DEALLOCATE outer_cursor;
  Print 'done outer_cursor'

查看代码