任何人都可以幫助我進行sp優化嗎？

-5

我寫了這個sp。但需要將近01:12秒才能執行。任何人都可以幫助我優化sp嗎？任何人都可以幫助我進行sp優化嗎？

declare @R71_TERM_PARA CHAR(3) = '14f' 

--AS 
BEGIN 
    -- SET NOCOUNT ON added to prevent extra result sets from 
    -- interfering with SELECT statements. 
    SET NOCOUNT ON; 

-- REG-LOA 
SELECT TM.* 
FROM (
     SELECT PN.UCLA_ID 
       ,PN.FULL_NAME_PERSON 
       ,SM.BAR_ASMT_CD 
       ,SM.REG_PMT_STAT_FL 
       ,SM.ENRL_WTHDRW_CD 
       ,SM.JOINT_STU_FL 
       ,TY.ADM_TERM_CD 
       ,TD_ADM.TERM_SEQ_NUM AS ADM_TSEQ 
       ,TT.TERM_CD   AS CURR_TERM 
       ,TT.TERM_SEQ_NUM  AS CURR_TSEQ 
       ,TT.CAREER_CD 
       ,TT.CAREER_SUFX_CD 
       ,TT.REG_TYP_CD 
       ,PT.COLL_CD 
       ,PT.MAJOR_CD 
       ,PT.DEG_CD 
       ,PT.PROG_PRIO_FL 
       ,TT_PRV1.TERM_CD   AS PRV1_TERM 
       ,TT_PRV1.TERM_SEQ_NUM AS PRV1_TSEQ 
       ,TT_PRV1.REG_TYP_CD  AS PRV1_REG_TYP 
       ,SM_PRV1.REG_PMT_STAT_FL AS PRV1_PMT_FL 
       ,SM_PRV1.ENRL_WTHDRW_CD AS PRV1_WTHDRW_CD 
       ,TT_PRV1.CAREER_CD  AS PRV1_CAREER 
       ,TT_PRV1.CAREER_SUFX_CD AS PRV1_SUFX 
       ,TT_PRV2.TERM_CD   AS PRV2_TERM 
       ,TT_PRV2.TERM_SEQ_NUM AS PRV2_TSEQ 
       ,TT_PRV2.REG_TYP_CD  AS PRV2_REG_TYP 
       ,SM_PRV2.REG_PMT_STAT_FL AS PRV2_PMT_FL 
       ,SM_PRV2.ENRL_WTHDRW_CD AS PRV2_WTHDRW_CD 
       ,TT_PRV2.CAREER_CD  AS PRV2_CAREER 
       ,TT_PRV2.CAREER_SUFX_CD AS PRV2_SUFX 
       ,TL.LOA_STRT_TERM_CD 
       ,TL.LOA_STRT_TSEQ 
       ,TL.LOA_RET_TERM_CD 
       ,TL.LOA_RET_TSEQ 
       ,TL.LOA_APRV_DT 
       ,TL.LOA_PETN_TYP_CD 
     FROM ID0APT AS AP 
       INNER JOIN 
       ID0PNT AS PN 
       ON AP.UCLA_ID    = PN.UCLA_ID 
       AND AP.NAME_SEQ_NUM   = PN.NAME_SEQ_NUM 
       INNER JOIN 
       SR0SMT AS SM 
       ON AP.UCLA_ID    = SM.STU_ID 
       INNER JOIN 
       SR0TTT AS TT 
       ON TT.STU_ID    = SM.STU_ID 
       AND TT.TERM_CD    = SM.TERM_CD 
       INNER JOIN 
       SR0TYT AS TY 
       ON TT.STU_ID    = TY.STU_ID 
       AND TT.CAREER_CD    = TY.CAREER_CD 
       AND TT.CAREER_SUFX_CD  = TY.CAREER_SUFX_CD 
       INNER JOIN 
       SR0PTT AS PT 
       ON TT.STU_ID    = PT.STU_ID 
       AND TT.TERM_CD    = PT.TERM_CD 
       AND TT.CAREER_CD    = PT.CAREER_CD 
       AND TT.CAREER_SUFX_CD  = PT.CAREER_SUFX_CD 
       LEFT JOIN 
       SR0TDT AS TD_ADM 
       ON TY.ADM_TERM_CD   = TD_ADM.TERM_CD 
       LEFT JOIN 
       SR0TTT AS TT_PRV1 
       ON TT.STU_ID    = TT_PRV1.STU_ID 
       AND TT.CAREER_CD    = TT_PRV1.CAREER_CD 
       AND TT.CAREER_SUFX_CD  = TT_PRV1.CAREER_SUFX_CD 
       AND CASE 
        --DENTAL, GRADUATE, UNDEGRADUATE PARAMETERS 
        WHEN TT.CAREER_CD = 'D' 
         OR TT.CAREER_CD = 'G' 
         OR TT.CAREER_CD = 'U' THEN 
         CASE RIGHT(SM.TERM_CD,1) 
         WHEN 'F' THEN SM.TERM_SEQ_NUM - 3 
         ELSE   SM.TERM_SEQ_NUM - 1 
         END 
        --LAW, MEDICAL PARAMETERS 
        ELSE 
         CASE RIGHT(SM.TERM_CD,1) 
         WHEN 'F' THEN SM.TERM_SEQ_NUM - 3 
         ELSE   SM.TERM_SEQ_NUM - 2 
         END 
        END      = TT_PRV1.TERM_SEQ_NUM  
       LEFT JOIN 
       SR0SMT AS SM_PRV1 
       ON TT_PRV1.STU_ID   = SM_PRV1.STU_ID 
       AND TT_PRV1.TERM_CD   = SM_PRV1.TERM_CD 
       LEFT JOIN 
       SR0TTT AS TT_PRV2 
       ON TT.STU_ID    = TT_PRV2.STU_ID 
       AND TT.CAREER_CD    = TT_PRV2.CAREER_CD 
       AND TT.CAREER_SUFX_CD  = TT_PRV2.CAREER_SUFX_CD 
       AND CASE 
        --DENTAL, GRADUATE, UNDERGRADUATE PARAMETERS 
        WHEN TT.CAREER_CD = 'D' 
         OR TT.CAREER_CD = 'G' 
         OR TT.CAREER_CD = 'U' THEN 
         CASE RIGHT(SM.TERM_CD,1) 
         WHEN 'S' THEN SM.TERM_SEQ_NUM - 2 
         ELSE   SM.TERM_SEQ_NUM - 4 
         END 
        --LAW, MEDICAL PARAMETERS 
        ELSE    SM.TERM_SEQ_NUM - 5 
        END      = TT_PRV2.TERM_SEQ_NUM  
       LEFT JOIN 
       SR0SMT AS SM_PRV2 
       ON TT_PRV2.STU_ID   = SM_PRV2.STU_ID 
       AND TT_PRV2.TERM_CD   = SM_PRV2.TERM_CD 
       INNER JOIN 
       SR0TLT AS TL 
       ON TT.STU_ID   = TL.STU_ID 
       AND TT.CAREER_CD  = TL.CAREER_CD 
       AND TT.CAREER_SUFX_CD = TL.CAREER_SUFX_CD 
       ,SR0TDT AS TD 
     WHERE 
       SM.BAR_ASMT_CD   NOT IN ('N','X') 
      AND AP.APP_ID     = 'SR0' 
      AND TD.TERM_CD     = @R71_TERM_PARA 
      AND SM.TERM_SEQ_NUM   >= TD.TERM_SEQ_NUM 
       --LATEST LOA START TERM BASED ON TERM VALUE 
      AND TL.LOA_STRT_TSEQ IN 
       (
       SELECT MAX(TL_MAX.LOA_STRT_TSEQ) 
       FROM SR0TLT AS TL_MAX 
       WHERE TL_MAX.STU_ID   = TT.STU_ID 
        AND TL_MAX.CAREER_CD  = TT.CAREER_CD 
        AND TL_MAX.CAREER_SUFX_CD = TT.CAREER_SUFX_CD 
        AND TL_MAX.LOA_STRT_TSEQ <= TT.TERM_SEQ_NUM 
       ) 
       --LATEST LOA START TERM BASED ON TERM VALUE 
      AND TL.LOA_APRV_DT IN 
       (
       SELECT MAX(TL_DT.LOA_APRV_DT) 
       FROM SR0TLT AS TL_DT 
       WHERE TL_DT.STU_ID   = TT.STU_ID 
        AND TL_DT.CAREER_CD  = TT.CAREER_CD 
        AND TL_DT.CAREER_SUFX_CD = TT.CAREER_SUFX_CD 
        AND TL_DT.LOA_STRT_TSEQ = 
          (
          SELECT MAX(TL_MAX.LOA_STRT_TSEQ) 
          FROM SR0TLT AS TL_MAX 
          WHERE TL_MAX.STU_ID   = TT.STU_ID 
           AND TL_MAX.CAREER_CD  = TT.CAREER_CD 
           AND TL_MAX.CAREER_SUFX_CD = TT.CAREER_SUFX_CD 
           AND TL_MAX.LOA_STRT_TSEQ <= TT.TERM_SEQ_NUM 
          ) 
       ) 
     )  AS TM 
WHERE --VALIDATE ONLY VALID TERMS 
     ( 
       (
        TM.CAREER_CD   IN ('D','M') 
       AND RIGHT(TM.CURR_TERM,1) IN ('F','W','S','2') 
      ) 
      OR 
       (
        TM.CAREER_CD   IN ('G','L','U') 
       AND RIGHT(TM.CURR_TERM,1) IN ('F','W','S') 
      ) 
     ) 
    AND (
      (
       (
        (
        --LOA MUST BE WITHIN LOA PETITION RANGE 
         TM.REG_TYP_CD     = 'LOA' 
        AND (
          TM.CURR_TSEQ     > TM.LOA_RET_TSEQ 
         OR TM.BAR_ASMT_CD    = 'I' 
         OR ( TM.BAR_ASMT_CD   IN ('B','Y') 
          AND TM.ENRL_WTHDRW_CD NOT IN ('C','X') 
          ) 
         OR (
           TM.CURR_TERM   = TM.LOA_STRT_TERM_CD 
          AND TM.PROG_PRIO_FL   = 'Y' 
          ) 
         ) 
       ) 
       OR 
        (
        --LOA MUST BE WITHIN LOA PETITION RANGE 
         TM.REG_TYP_CD     <> 'LOA' 
        AND TM.CURR_TSEQ      < TM.LOA_RET_TSEQ 
        AND TM.CURR_TSEQ      > TM.LOA_STRT_TSEQ 
       ) 
       OR 
        (
        --FILED FOR LEAVE BUT INVALID BAR_ASMT_CD 
         TM.ENRL_WTHDRW_CD     = 'L' 
        AND TM.REG_PMT_STAT_FL    = 'N' 
        AND TM.BAR_ASMT_CD    NOT IN ('D','Z') 
       ) 
      ) 

      ) 
     OR (
       --RLA MUST EQUAL PETITION RETURN TERM IN PREVIOUS LOA PETITION RANGE 
        TM.REG_TYP_CD     = 'RLA' 
       AND TM.CURR_TERM     NOT IN 
        (
         SELECT TL.LOA_RET_TERM_CD 
         FROM SR0TLT AS TL 
         WHERE TL.STU_ID   = TM.UCLA_ID 
         AND TL.CAREER_CD  = TM.CAREER_CD 
         AND TL.CAREER_SUFX_CD = TM.CAREER_SUFX_CD 
         --LATEST LOA START TERM BASED ON TERM VALUE 
         AND TL.LOA_STRT_TSEQ IN 
           (
           SELECT MAX(TL_MAX.LOA_STRT_TSEQ) 
           FROM SR0TLT AS TL_MAX 
           WHERE TL_MAX.STU_ID   = TM.UCLA_ID 
            AND TL_MAX.CAREER_CD  = TM.CAREER_CD 
            AND TL_MAX.CAREER_SUFX_CD = TM.CAREER_SUFX_CD 
            AND TL_MAX.LOA_STRT_TSEQ < TM.CURR_TSEQ 
           ) 
          --VALIDATE ONLY VALID TERMS 
          AND ( 
            (
             TM.CAREER_CD   IN ('D','M') 
            AND RIGHT(TM.CURR_TERM,1) IN ('F','W','S','2') 
           ) 
           OR 
            (
             TL.CAREER_CD   IN ('G','L','U') 
            AND RIGHT(TM.CURR_TERM,1) IN ('F','W','S') 
           ) 
          ) 
        ) 
      ) 

     OR (
       (
        (
        --RLA MUST EQUAL PETITION RETURN TERM 
         TM.REG_TYP_CD    = 'RLA' 
        AND TM.CURR_TERM    <> TM.LOA_RET_TERM_CD 
        AND TM.CURR_TSEQ     > TM.LOA_STRT_TSEQ 
       ) 
       OR 
        (
        --RLA MUST EQUAL PETITION RETURN TERM 
         TM.REG_TYP_CD    <> 'RLA' 
        AND TM.CURR_TERM     = TM.LOA_RET_TERM_CD 
       ) 
      ) 
      ) 

     ) 

UNION 

SELECT TM.* 
FROM (
     SELECT PN.UCLA_ID 
       ,PN.FULL_NAME_PERSON 
       ,SM.BAR_ASMT_CD 
       ,SM.REG_PMT_STAT_FL 
       ,SM.ENRL_WTHDRW_CD 
       ,SM.JOINT_STU_FL 
       ,TY.ADM_TERM_CD 
       ,TD_ADM.TERM_SEQ_NUM AS ADM_TSEQ 
       ,TT.TERM_CD   AS CURR_TERM 
       ,TT.TERM_SEQ_NUM  AS CURR_TSEQ 
       ,TT.CAREER_CD 
       ,TT.CAREER_SUFX_CD 
       ,TT.REG_TYP_CD 
       ,PT.COLL_CD 
       ,PT.MAJOR_CD 
       ,PT.DEG_CD 
       ,PT.PROG_PRIO_FL 
       ,TT_PRV1.TERM_CD   AS PRV1_TERM 
       ,TT_PRV1.TERM_SEQ_NUM AS PRV1_TSEQ 
       ,TT_PRV1.REG_TYP_CD  AS PRV1_REG_TYP 
       ,SM_PRV1.REG_PMT_STAT_FL AS PRV1_PMT_FL 
       ,SM_PRV1.ENRL_WTHDRW_CD AS PRV1_WTHDRW_CD 
       ,TT_PRV1.CAREER_CD  AS PRV1_CAREER 
       ,TT_PRV1.CAREER_SUFX_CD AS PRV1_SUFX 
       ,TT_PRV2.TERM_CD   AS PRV2_TERM 
       ,TT_PRV2.TERM_SEQ_NUM AS PRV2_TSEQ 
       ,TT_PRV2.REG_TYP_CD  AS PRV2_REG_TYP 
       ,SM_PRV2.REG_PMT_STAT_FL AS PRV2_PMT_FL 
       ,SM_PRV2.ENRL_WTHDRW_CD AS PRV2_WTHDRW_CD 
       ,TT_PRV2.CAREER_CD  AS PRV2_CAREER 
       ,TT_PRV2.CAREER_SUFX_CD AS PRV2_SUFX 
       ,'' AS LOA_STRT_TERM_CD 
       ,0 AS LOA_STRT_TSEQ 
       ,'' AS LOA_RET_TERM_CD 
       ,0 AS LOA_RET_TSEQ 
       ,'' AS LOA_APRV_DT 
       ,'' AS LOA_PETN_TYP_CD 
     FROM ID0APT AS AP 
       INNER JOIN 
       ID0PNT AS PN 
       ON AP.UCLA_ID    = PN.UCLA_ID 
       AND AP.NAME_SEQ_NUM   = PN.NAME_SEQ_NUM 
       INNER JOIN 
       SR0SMT AS SM 
       ON AP.UCLA_ID    = SM.STU_ID 
       INNER JOIN 
       SR0TTT AS TT 
       ON TT.STU_ID    = SM.STU_ID 
       AND TT.TERM_CD    = SM.TERM_CD 
       INNER JOIN 
       SR0TYT AS TY 
       ON TT.STU_ID    = TY.STU_ID 
       AND TT.CAREER_CD    = TY.CAREER_CD 
       AND TT.CAREER_SUFX_CD  = TY.CAREER_SUFX_CD 
       INNER JOIN 
       SR0PTT AS PT 
       ON TT.STU_ID    = PT.STU_ID 
       AND TT.TERM_CD    = PT.TERM_CD 
       AND TT.CAREER_CD    = PT.CAREER_CD 
       AND TT.CAREER_SUFX_CD  = PT.CAREER_SUFX_CD 
       LEFT JOIN 
       SR0TDT AS TD_ADM 
       ON TY.ADM_TERM_CD   = TD_ADM.TERM_CD 
       LEFT JOIN 
       SR0TTT AS TT_PRV1 
       ON TT.STU_ID    = TT_PRV1.STU_ID 
       AND TT.CAREER_CD    = TT_PRV1.CAREER_CD 
       AND TT.CAREER_SUFX_CD  = TT_PRV1.CAREER_SUFX_CD 
       AND CASE 
        --DENTAL, GRADUATE, UNDEGRADUATE PARAMETERS 
        WHEN TT.CAREER_CD = 'D' 
         OR TT.CAREER_CD = 'G' 
         OR TT.CAREER_CD = 'U' THEN 
         CASE RIGHT(SM.TERM_CD,1) 
         WHEN 'F' THEN SM.TERM_SEQ_NUM - 3 
         ELSE   SM.TERM_SEQ_NUM - 1 
         END 
        --LAW, MEDICAL PARAMETERS 
        ELSE 
         CASE RIGHT(SM.TERM_CD,1) 
         WHEN 'F' THEN SM.TERM_SEQ_NUM - 3 
         ELSE   SM.TERM_SEQ_NUM - 2 
         END 
        END      = TT_PRV1.TERM_SEQ_NUM  
       LEFT JOIN 
       SR0SMT AS SM_PRV1 
       ON TT_PRV1.STU_ID   = SM_PRV1.STU_ID 
       AND TT_PRV1.TERM_CD   = SM_PRV1.TERM_CD 
       LEFT JOIN 
       SR0TTT AS TT_PRV2 
       ON TT.STU_ID    = TT_PRV2.STU_ID 
       AND TT.CAREER_CD    = TT_PRV2.CAREER_CD 
       AND TT.CAREER_SUFX_CD  = TT_PRV2.CAREER_SUFX_CD 
       AND CASE 
        --DENTAL, GRADUATE, UNDERGRADUATE PARAMETERS 
        WHEN TT.CAREER_CD = 'D' 
         OR TT.CAREER_CD = 'G' 
         OR TT.CAREER_CD = 'U' THEN 
         CASE RIGHT(SM.TERM_CD,1) 
         WHEN 'S' THEN SM.TERM_SEQ_NUM - 2 
         ELSE   SM.TERM_SEQ_NUM - 4 
         END 
        --LAW, MEDICAL PARAMETERS 
        ELSE    SM.TERM_SEQ_NUM - 5 
        END      = TT_PRV2.TERM_SEQ_NUM  
       LEFT JOIN 
       SR0SMT AS SM_PRV2 
       ON TT_PRV2.STU_ID   = SM_PRV2.STU_ID 
       AND TT_PRV2.TERM_CD   = SM_PRV2.TERM_CD 
       ,SR0TDT AS TD 
     WHERE 
       SM.BAR_ASMT_CD   NOT IN ('N','X') 
      AND AP.APP_ID     = 'SR0' 
      AND TD.TERM_CD     = @R71_TERM_PARA 
      AND SM.TERM_SEQ_NUM   >= TD.TERM_SEQ_NUM 
     )  AS TM 
WHERE --LOA AND RLA MUST HAVE A VALID PETIION RANGE 
     TM.REG_TYP_CD   IN ('LOA','RLA') 
    AND TM.UCLA_ID  NOT IN 
     (
      SELECT TL.STU_ID 
      FROM SR0TLT AS TL 
      WHERE TL.STU_ID   = TM.UCLA_ID 
      AND TL.CAREER_CD  = TM.CAREER_CD 
      AND TL.CAREER_SUFX_CD = TM.CAREER_SUFX_CD 
      --LATEST LOA START TERM BASED ON TERM VALUE 
      AND TL.LOA_STRT_TSEQ IN 
        (
        SELECT MAX(TL_MAX.LOA_STRT_TSEQ) 
        FROM SR0TLT AS TL_MAX 
        WHERE TL_MAX.STU_ID   = TM.UCLA_ID 
         AND TL_MAX.CAREER_CD  = TM.CAREER_CD 
         AND TL_MAX.CAREER_SUFX_CD = TM.CAREER_SUFX_CD 
         AND TL_MAX.LOA_STRT_TSEQ < TM.CURR_TSEQ 
        ) 
       --VALIDATE ONLY VALID TERMS 
       AND ( 
         (
          TM.CAREER_CD   IN ('D','M') 
         AND RIGHT(TM.CURR_TERM,1) IN ('F','W','S','2') 
        ) 
        OR 
         (
          TL.CAREER_CD   IN ('G','L','U') 
         AND RIGHT(TM.CURR_TERM,1) IN ('F','W','S') 
        ) 
       ) 
     ) 


ORDER BY UCLA_ID 

IF @@ROWCOUNT = 0 
PRINT 'WARNING: NO ROWS WERE SELECTED.'; 

END

我想在第二個聯合中有類似的代碼。是否有可能將此代碼添加到CTE中，然後加入需要的地方？

來源

2016-01-22 sam

OMG，這就像400行的SQL與連接和case語句的gobs。我會先把它分解成幾部分，看看它們中的任何一個是否執行得不好，然後如果它們不是分開的話，那就開始將它們連接在一起。對於所有表和索引定義，我們無法爲您的模式提供幫助。 – BlackICE

「UNDEGRADUATE」？你檢查過執行計劃嗎？更新了統計信息？考慮使用物化視圖？根據您對相關表格的環境和大小的描述，我們沒有理由相信性能不是很好。 – HABO

找出上半部分和下半部分是否互斥。如果是，請將「工會」更改爲「工會全體」。另外，最終結果是否需要由UCLA_ID進行排序？如果沒有，就把它拿出來。

然後不幸的是，你將不得不從一半開始，從內部子查詢/派生表開始，然後從一個表開始。我試圖讀取前半部分的猜測是從

select top 1 * 
from ID0APT AS AP 
where 
AP.APP_ID = 'SR0';

請確保立即返回。然後，將連接添加到下一個表以及任何相應的「where」。看看你是否能夠完成所有的連接，而不會因爲嘗試拉第一條記錄而遭受重大的放緩。

如果你確實發現減速，請確保你有一個索引來滿足你的複合連接。

然後，您可以嘗試在底部添加複雜的「in」，例如，

--LATEST LOA START TERM BASED ON TERM VALUE 
     AND TL.LOA_STRT_TSEQ IN 
      (
      SELECT MAX(TL_MAX.LOA_STRT_TSEQ) 
      FROM SR0TLT AS TL_MAX 
      WHERE TL_MAX.STU_ID   = TT.STU_ID 
       AND TL_MAX.CAREER_CD  = TT.CAREER_CD 
       AND TL_MAX.CAREER_SUFX_CD = TT.CAREER_SUFX_CD 
       AND TL_MAX.LOA_STRT_TSEQ <= TT.TERM_SEQ_NUM 
      )

這些都是相關的子查詢，我認爲這將是你的問題的開始。

然後你可以看看複雜的「或」，例如，

WHERE --VALIDATE ONLY VALID TERMS 
     ( 
       (
        TM.CAREER_CD   IN ('D','M') 
       AND RIGHT(TM.CURR_TERM,1) IN ('F','W','S','2') 
      ) 
      OR 
       (
        TM.CAREER_CD   IN ('G','L','U') 
       AND RIGHT(TM.CURR_TERM,1) IN ('F','W','S') 
      ) 
     )

來源

2016-01-22 23:33:53

任何人都可以幫助我進行sp優化嗎？

回答

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