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我正在尝试提高当前需要超过 5 个小时的存储过程的性能。我已经做了以下事情来提高这个过程的性能——我已经为每个表创建了索引。--我使用的是count(1)，而不是count(*)。

但我只是想知道用什么代替while循环，如果可能的话，我可以使用游标吗？会有什么影响吗，因为我读过游标确实需要很多时间来处理..

过程摘要： - 计算表的行数。- 对于每行计数选择参数。- 这些参数正被另一个过程用于执行。

     DECLARE @lnTotalCount INT


   SELECT @lnTotalCount = COUNT(*) FROM 
      firstTable chksts


  SELECT @lnRecordCount = 1, @lnRowsProcessed =0
  WHILE @lnRecordCount <= @lnTotalCount
        BEGIN

        --  SET ROWCOUNT 1

          SELECT  @lcCKPY_REF_ID  = ckck.CKPY_REF_ID,
            @lnCKCK_SEQ_NO        = ckck.CKCK_SEQ_NO,
            @lcPYPY_ID            = ckck.PYPY_ID,
            @lnCKCK_CK_NO         = ckck.CKCK_CK_NO,
            @ldtCKCK_CASHED_DT    = ckck.CKCK_CASHED_DT,
            @ldtCKCK_PRINTED_DT   = ckck.CKCK_PRINTED_DT,
            @ldtCKCK_REISS_DT     = ckck.CKCK_REISS_DT,
            @lcCKCK_TYPE          = ckck.CKCK_TYPE,
            @lcCKCK_PAYEE_NAME    = ckck.CKCK_PAYEE_NAME,
            @lcCKCK_CURR_STS      = LTRIM(RTRIM(chksts.[TRANSACTION])),
            @lnCKST_SEQ_NO        = ckck.CKST_SEQ_NO,
            @lcCKCK_REISS_USUS_ID = ckck.CKCK_REISS_USUS_ID,
            @lnCKCK_LOCK_TOKEN    = ckck.CKCK_LOCK_TOKEN,
            @ldtATXR_SOURCE_ID    = ckck.ATXR_SOURCE_ID,
            @lnBPID_CK_NO         = chksts.SERIAL_NUMBER

          FROM
             firstTable chksts,
             secondTable ckck,
             thirdTable bpid

          WHERE ckck.CKPY_REF_ID   = bpid.CKPY_REF_ID
            AND bpid.BPID_CK_NO    = chksts.SERIAL_NUMBER
            AND ckck.CKCK_SEQ_NO   = bpid.CKCK_SEQ_NO
            AND ckck.CKCK_CURR_STS IN ('03','X3') 
            AND chksts.ID = @lnRecordCount
 IF(@@ROWCOUNT<>0) /* 1.5 If-Else condition*/
      BEGIN  
      EXEC @lnRetCd = ABProcedure
                  NULL,
                  NULL,
                  @lcCKPY_REF_ID,
                  @lnCKCK_SEQ_NO,
                  @lcPYPY_ID,
                  @lnCKCK_CK_NO,
                  @ldtCKCK_CASHED_DT,
                  @ldtCKCK_PRINTED_DT,
                  @ldtCKCK_REISS_DT,
                  @lcCKCK_TYPE,
                  @lcCKCK_PAYEE_NAME,
                  @lcCKCK_CURR_STS,
                  @lnCKST_SEQ_NO,
                  @lcCKCK_REISS_USUS_ID,
                  @lnCKCK_LOCK_TOKEN,
                  @ldtATXR_SOURCE_ID

           SELECT @lnRowsProcessed = @lnRowsProcessed + @@ROWCOUNT
      SELECT @lnRecordCount = @lnRecordCount + 1
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