-1

実行に時間がかかるクエリがあります。各テーブルのインデックスをいじってみましたが、まだ時間がかかります。このクエリを最適化する他の方法はありますか?

SELECT tblDLM.Phone
FROM   (SELECT Table1.Phone,
               Count(Table_1.T1ID) AS CountOfT1ID
        FROM   Table_1
               INNER JOIN Table_2
                 ON Table_1.SubscriptionID = Table_2.SubscriptionID
        WHERE  ( ( Table_1.MsgType ) = 'coupon' )
               AND (( ( Table_1.Phone ) IN (SELECT DISTINCT Table_3.Phone
                                            FROM   Table_3
                                            WHERE  Table_3.DeliveryStatus <> 0
                                                   AND Table1.Phone = Table_3.Phone)
                      AND CampaignID <> Cast(@intCampaignIDTemp AS NVARCHAR(50)) ))
        GROUP  BY Table_1.Phone,
                  Table_2.MasterServiceID
        HAVING Table_2.MasterServiceID = 121) tblDLM
WHERE  CountOfT1ID >= 3

ありがとう。

4

1 に答える 1

2

これを試して：

編集：

本当に必要GROUP BY Table_1.Phone, Table_2.MasterServiceIDですか？

DECLARE @nvarcharCampaignIDTemp NVARCHAR(50);
SET @nvarcharCampaignIDTemp = Cast(@intCampaignIDTemp AS NVARCHAR(50));

SELECT 
    Table1.Phone
FROM
    Table_1
    INNER JOIN Table_2
        ON Table_1.SubscriptionID = Table_2.SubscriptionID
    INNER JOIN Table_3
        ON Table1.Phone = Table_3.Phone
WHERE  
    Table_1.MsgType = 'coupon'
    AND Table_2.MasterServiceID = 121
    AND CampaignID <> @nvarcharCampaignIDTemp
    AND Table_3.DeliveryStatus <> 0
    AND Count(DISTINCT Table_1.T1ID) >= 3
于 2012-08-24T14:43:33.730 に答える