Pagination requête complexe

**nemo67** · 21/12/2009, 11h44

Bonjour

Grâce à Waldar j'ai réussi à écrire une requête qui correspond au résultat que j'attends.

Désormais je cherche à paginer cette requête de façon à minimiser le traffic réseau et optimiser les temps de chargement.

Pb je ne sais pas ou insérer le row_number car il doit se faire dans l'ordre du tri ???

De plus, la requête devient pour moi difficile à lire (et donc à maintenir) n'y aurait il pas un moyen de la rendre plus lisible ?

PS : les noms de colonnes sont génériques car la requête est construite dynamiquement ...

Code :

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;WITH RES 
     AS (SELECT   T012_11.FAM + ' - ' + T012_11.LIB           AS col10, 
                  T012_12.FAM + ' - ' + T012_12.LIB           AS col11, 
                  ART.REFUN                                   AS col12, 
                  Sum(CASE 
                        WHEN Year(PIDT) = 2009 
                        THEN TOTALCA * SENS2 
                        ELSE 0 
                      END) AS col14, 
                  Grouping(T012_11.FAM + ' - ' + T012_11.LIB) AS col30, 
                  Grouping(T012_12.FAM + ' - ' + T012_12.LIB) AS col31, 
                  Grouping(ART.REFUN)                         AS col32 
         FROM     (SELECT MOUV.DOS, 
                          ENT.PIDT, 
                          MOUV.TIERS, 
                          MOUV.REF, 
                          MOUV.OP, 
                          MOUV.DEPO, 
                          ENT.REPR_0001, 
                          0                         AS TOTALQTE, 
                          MOUV.PUSTAT * MOUV.REFQTE AS TOTALCA, 
                          0                         AS TOTALMARGE1, 
                          0                         AS TOTALMARGE2, 
                          0                         AS TOTALMARGE3, 
                          (CASE 
                             WHEN T020.SENS = 1 
                             THEN -1 
                             ELSE 1 
                           END) AS SENS2, 
                          ENT.PINO                  AS PIECE 
                   FROM   MOUV 
                          JOIN ENT 
                            ON ENT.DOS = MOUV.DOS 
                               AND ENT.TICOD = 'C' 
                               AND ENT.PICOD = 4 
                               AND ENT.CE4 = 1 
                               AND ENT.PINO = MOUV.FANO 
                          JOIN T020 
                            ON T020.DOS = 999 
                               AND T020.CEBIN = 20 
                               AND T020.OP = MOUV.OP 
                          JOIN CLI 
                            ON ENT.DOS = CLI.DOS 
                               AND ENT.TIERS = CLI.TIERS 
                               AND CLI.CE1 = 3 
                   WHERE  ((ENT.PIDT >= { d '2009-01-01'} 
                            AND ENT.PIDT <= {d '2009-12-31'})) 
                          AND (ENT.DOS = 50 
                               AND ENT.CE4 = '1' 
                               AND ENT.TICOD = 'C' 
                               AND ENT.PICOD = 4 
                               AND MOUV.FACE4 = 1 
                               AND CLI.TIERS NOT IN ('C0200901','C0000172','C0200903','C0200904', 
                                                     'C0200920'))) AS BASE 
                  LEFT JOIN ART 
                    ON ART.DOS = BASE.DOS 
                       AND ART.REF = BASE.REF 
                  LEFT JOIN T012 AS T012_11 
                    ON T012_11.DOS = BASE.DOS 
                       AND T012_11.CEBIN = 12 
                       AND T012_11.FAMNO = 1 
                       AND T012_11.FAM = Left(ART.FAM_0001,1) 
                  LEFT JOIN T012 AS T012_12 
                    ON T012_12.DOS = BASE.DOS 
                       AND T012_12.CEBIN = 12 
                       AND T012_12.FAMNO = 1 
                       AND T012_12.FAM = Left(ART.FAM_0001,3) 
         GROUP BY T012_11.FAM + ' - ' + T012_11.LIB, 
                  T012_12.FAM + ' - ' + T012_12.LIB, 
                  ART.REFUN WITH ROLLUP) 
SELECT   *
FROM     RES 
ORDER BY col30, 
         Max(CASE 
               WHEN col32 = 1 
                    AND col31 = 1 
                    AND col30 = 0 
               THEN col14 
             END) 
           OVER(PARTITION BY col10 ) ASC, 
         CASE 
           WHEN col32 = 1 
                AND col31 = 1 
                AND col30 = 0 
           THEN 0 
           ELSE 1 
         END DESC, 
         Max(CASE 
               WHEN col32 = 1 
                    AND col31 = 0 
                    AND col30 = 0 
               THEN col14 
             END) 
           OVER(PARTITION BY col11 ) ASC, 
         CASE 
           WHEN col32 = 1 
                AND col31 = 0 
                AND col30 = 0 
           THEN 0 
           ELSE 1 
         END DESC, 
         CASE 
           WHEN col32 = 0 
                AND col31 = 0 
                AND col30 = 0 
           THEN 0 
           ELSE 1 
         END DESC, 
         col14 ASC

**SQLpro** · 21/12/2009, 21h06

Pour affihcer les lignes de 1 à 10 :

Code :

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WITH RES 
     AS (SELECT   T012_11.FAM + ' - ' + T012_11.LIB           AS col10, 
                  T012_12.FAM + ' - ' + T012_12.LIB           AS col11, 
                  ART.REFUN                                   AS col12, 
                  Sum(CASE 
                        WHEN Year(PIDT) = 2009 
                        THEN TOTALCA * SENS2 
                        ELSE 0 
                      END) AS col14, 
                  Grouping(T012_11.FAM + ' - ' + T012_11.LIB) AS col30, 
                  Grouping(T012_12.FAM + ' - ' + T012_12.LIB) AS col31, 
                  Grouping(ART.REFUN)                         AS col32 
         FROM     (SELECT MOUV.DOS, 
                          ENT.PIDT, 
                          MOUV.TIERS, 
                          MOUV.REF, 
                          MOUV.OP, 
                          MOUV.DEPO, 
                          ENT.REPR_0001, 
                          0                         AS TOTALQTE, 
                          MOUV.PUSTAT * MOUV.REFQTE AS TOTALCA, 
                          0                         AS TOTALMARGE1, 
                          0                         AS TOTALMARGE2, 
                          0                         AS TOTALMARGE3, 
                          (CASE 
                             WHEN T020.SENS = 1 
                             THEN -1 
                             ELSE 1 
                           END) AS SENS2, 
                          ENT.PINO                  AS PIECE 
                   FROM   MOUV 
                          JOIN ENT 
                            ON ENT.DOS = MOUV.DOS 
                               AND ENT.TICOD = 'C' 
                               AND ENT.PICOD = 4 
                               AND ENT.CE4 = 1 
                               AND ENT.PINO = MOUV.FANO 
                          JOIN T020 
                            ON T020.DOS = 999 
                               AND T020.CEBIN = 20 
                               AND T020.OP = MOUV.OP 
                          JOIN CLI 
                            ON ENT.DOS = CLI.DOS 
                               AND ENT.TIERS = CLI.TIERS 
                               AND CLI.CE1 = 3 
                   WHERE  ((ENT.PIDT >= { d '2009-01-01'} 
                            AND ENT.PIDT <= {d '2009-12-31'})) 
                          AND (ENT.DOS = 50 
                               AND ENT.CE4 = '1' 
                               AND ENT.TICOD = 'C' 
                               AND ENT.PICOD = 4 
                               AND MOUV.FACE4 = 1 
                               AND CLI.TIERS NOT IN ('C0200901','C0000172','C0200903','C0200904', 
                                                     'C0200920'))) AS BASE 
                  LEFT JOIN ART 
                    ON ART.DOS = BASE.DOS 
                       AND ART.REF = BASE.REF 
                  LEFT JOIN T012 AS T012_11 
                    ON T012_11.DOS = BASE.DOS 
                       AND T012_11.CEBIN = 12 
                       AND T012_11.FAMNO = 1 
                       AND T012_11.FAM = LEFT(ART.FAM_0001,1) 
                  LEFT JOIN T012 AS T012_12 
                    ON T012_12.DOS = BASE.DOS 
                       AND T012_12.CEBIN = 12 
                       AND T012_12.FAMNO = 1 
                       AND T012_12.FAM = LEFT(ART.FAM_0001,3) 
         GROUP BY T012_11.FAM + ' - ' + T012_11.LIB, 
                  T012_12.FAM + ' - ' + T012_12.LIB, 
                  ART.REFUN WITH ROLLUP),
T2 AS
(                  
SELECT   *, ROW_NUMBER() OVER(ORDER BY col30, 
         Max(CASE 
               WHEN col32 = 1 
                    AND col31 = 1 
                    AND col30 = 0 
               THEN col14 
             END) 
           OVER(PARTITION BY col10 ) ASC, 
         CASE 
           WHEN col32 = 1 
                AND col31 = 1 
                AND col30 = 0 
           THEN 0 
           ELSE 1 
         END DESC, 
         Max(CASE 
               WHEN col32 = 1 
                    AND col31 = 0 
                    AND col30 = 0 
               THEN col14 
             END) 
           OVER(PARTITION BY col11 ) ASC, 
         CASE 
           WHEN col32 = 1 
                AND col31 = 0 
                AND col30 = 0 
           THEN 0 
           ELSE 1 
         END DESC, 
         CASE 
           WHEN col32 = 0 
                AND col31 = 0 
                AND col30 = 0 
           THEN 0 
           ELSE 1 
         END DESC, 
         col14 ASC) AS N
 
FROM     RES 
)
SELECT *
FROM   T2
WHERE  N BETWEEN 1 AND 10

A lire sur les fonction fenêtrées : http://sqlpro.developpez.com/article...clause-window/

A +

**nemo67** · 21/12/2009, 22h16

Merci SQLpro pour votre réponse

Par contre désolé, cela ne fonctionne pas. J'ai l'erreur suivante :

Windowed functions cannot be used in the context of another windowed function or aggregate.

Je ne comprends pas ? je ne pourrai pas utiliser de fonctions de pagination sur des aggregats ? je ne sais plus du tout ou chercher ...

Pour la simplification, avez vous une idée ? j'avoue que pour la maintenance cela me fait très peur !

**Waldar** · 22/12/2009, 11h51

Vous ne pouvez pas imbriquer une fonction de fenêtrage (le MAX() OVER()) dans une autre (le ROW_NUMBER).

Il vous faut passer par une sous-requête supplémentaire.
J'en profite pour sortir votre sous-requête BASE dans une CTE :

Code :

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WITH BASE (DOS, PIDT, TIERS, REF, OP, DEPO, REPR_0001, TOTALQTE,
           TOTALCA, TOTALMARGE1, TOTALMARGE2, TOTALMARGE3, SENS2, PIECE) AS
(
SELECT MOUV.DOS, 
       ENT.PIDT, 
       MOUV.TIERS, 
       MOUV.REF, 
       MOUV.OP, 
       MOUV.DEPO, 
       ENT.REPR_0001, 
       0                         AS TOTALQTE, 
       MOUV.PUSTAT * MOUV.REFQTE AS TOTALCA, 
       0                         AS TOTALMARGE1, 
       0                         AS TOTALMARGE2, 
       0                         AS TOTALMARGE3, 
       (CASE 
         WHEN T020.SENS = 1 
         THEN -1 
         ELSE 1 
       END) AS SENS2, 
       ENT.PINO                  AS PIECE 
  FROM MOUV 
       INNER JOIN ENT 
         ON ENT.DOS = MOUV.DOS 
        AND ENT.TICOD = 'C' 
        AND ENT.PICOD = 4 
        AND ENT.CE4 = 1 
        AND ENT.PINO = MOUV.FANO 
       INNER JOIN T020 
         ON T020.DOS = 999 
        AND T020.CEBIN = 20 
        AND T020.OP = MOUV.OP 
       INNER JOIN CLI 
         ON ENT.DOS = CLI.DOS 
        AND ENT.TIERS = CLI.TIERS 
        AND CLI.CE1 = 3 
 WHERE ENT.PIDT >= {d '2009-01-01'} 
   AND ENT.PIDT <= {d '2009-12-31'}
   AND ENT.DOS = 50 
   AND ENT.CE4 = '1' 
   AND ENT.TICOD = 'C' 
   AND ENT.PICOD = 4 
   AND MOUV.FACE4 = 1 
   AND CLI.TIERS NOT IN ('C0200901', 'C0000172', 'C0200903', 'C0200904', 'C0200920')
)
  , RES1 (col10, col11, col12, col14, col30, col31, col32) AS
(
SELECT   T012_11.FAM + ' - ' + T012_11.LIB           AS col10, 
         T012_12.FAM + ' - ' + T012_12.LIB           AS col11, 
         ART.REFUN                                   AS col12, 
         Sum(CASE 
               WHEN Year(PIDT) = 2009 
               THEN TOTALCA * SENS2 
               ELSE 0 
             END) AS col14, 
         Grouping(T012_11.FAM + ' - ' + T012_11.LIB) AS col30, 
         Grouping(T012_12.FAM + ' - ' + T012_12.LIB) AS col31, 
         Grouping(ART.REFUN)                         AS col32
FROM     BASE 
         LEFT JOIN ART 
           ON ART.DOS = BASE.DOS 
          AND ART.REF = BASE.REF 
         LEFT JOIN T012 AS T012_11 
           ON T012_11.DOS = BASE.DOS 
          AND T012_11.CEBIN = 12 
          AND T012_11.FAMNO = 1 
          AND T012_11.FAM = LEFT(ART.FAM_0001,1) 
         LEFT JOIN T012 AS T012_12 
           ON T012_12.DOS = BASE.DOS 
          AND T012_12.CEBIN = 12 
          AND T012_12.FAMNO = 1 
          AND T012_12.FAM = LEFT(ART.FAM_0001,3) 
GROUP BY T012_11.FAM + ' - ' + T012_11.LIB, 
         T012_12.FAM + ' - ' + T012_12.LIB, 
         ART.REFUN WITH ROLLUP
)
  ,  RES2 ( col10, col11, col12, col14, col30,
            ord1 , ord2 , ord3 , ord4 , ord5 ) AS
(
SELECT   col10, col11, col12, col14, col30,
         Max(CASE 
               WHEN col32 = 1 
                AND col31 = 1 
                AND col30 = 0 
               THEN col14 
             END) OVER(PARTITION BY col10) AS ord1, 
         CASE 
           WHEN col32 = 1 
            AND col31 = 1 
            AND col30 = 0 
           THEN 0 ELSE 1 
         END                               AS ord2, 
         Max(CASE 
               WHEN col32 = 1 
                AND col31 = 0 
                AND col30 = 0 
               THEN col14 
             END) OVER(PARTITION BY col11) AS ord3, 
         CASE 
           WHEN col32 = 1 
            AND col31 = 0 
            AND col30 = 0 
           THEN 0 ELSE 1 
         END                               AS ord4, 
         CASE 
           WHEN col32 = 0 
            AND col31 = 0 
            AND col30 = 0 
           THEN 0 ELSE 1 
         END                               AS ord5
FROM     RES1
)
  ,  RES3 ( col10, col11, col12, col14, rn ) AS
(
SELECT   col10, col11, col12, col14,
         ROW_NUMBER() OVER(ORDER BY col30 ASC,
                                    ord1  ASC,
                                    ord2 DESC,
                                    ord3  ASC,
                                    ord4 DESC,
                                    ord5 DESC,
                                    col14 ASC)
FROM     RES2
)
SELECT col10, col11, col12, col14
  FROM RES3
 WHERE rn BETWEEN 1 AND 10;

**nemo67** · 22/12/2009, 22h21

Effectivement Waldar cela fonctionne, par contre ca rame rame ... beaucoup plus que s'il n'y avait pas de pagination !

Du coup je suis perplexe quant à l'utilité de la pagination. Qu'en pensez vous ?

Pagination requête complexe

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