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POwhat index(es) needs to be added for this query to work properly?
 

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  1. POwhat index(es) needs to be added for this query to work properly?
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    <p>This query pops up in my slow query logs:</p> <pre><code>SELECT COUNT(*) AS ordersCount, SUM(ItemsPrice + COALESCE(extrasPrice, 0.0)) AS totalValue, SUM(ItemsPrice) AS totalValue, SUM(std_delivery_charge) AS totalStdDeliveryCharge, SUM(extra_delivery_charge) AS totalExtraDeliveryCharge, this_.type AS y5_, this_.transmissionMethod AS y6_, this_.extra_delivery AS y7_ FROM orders this_ WHERE this_.deliveryDate BETWEEN '2010-01-01 00:00:00' AND '2010-09-01 00:00:00' AND this_.status IN(1, 3, 2, 10, 4, 5, 11) AND this_.senderShop_id = 10017 GROUP BY this_.type, this_.transmissionMethod, this_.extra_delivery ORDER BY this_.deliveryDate DESC; </code></pre> <p>The table is InnoDB and has about 880k rows and takes between 9-12 seconds to execute. I tried adding the following index <code>ALTER TABLE orders ADD INDEX _deliverydate_senderShopId_status ( deliveryDate , senderShop_id , status, type, transmissionMethod, extra_delivery);</code> with no practical gains. Any help and/or suggestion is welcomed</p> <p>Here is the query execution plan right now:</p> <pre> id select_type table type possible_keys key key_len ref rows filtered Extra 1 SIMPLE this_ ref FKC3DF62E57562BA6F 8 const 139894 100.00 Using where; Using temporary; Using filesort </pre> <p>I took out the possible_keys value out of the text because i think it listed all the indexes in the table. The key used (FKC3DF62E57562BA6F) looks like </p> <pre> Keyname Type Unique Packed Field Cardinality Collation Null Comment FKC3DF62E57562BA6F BTREE No No senderShop_id 4671 A </pre>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USTudor Constantin
    1. USTudor Constantin
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COwhat is the column type of deliveryDate?
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      1. POwhat index(es) needs to be added for this query to work properly?
      1. USThilo
    2. COIndexing should be done in conjunction with analysis of Query Plans to see how they are being really used. It is not always obvious as to how the DB is going to use the index based on optimization done by the DB. Post your query plan with this index and then we will be in a better position to help
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      1. POwhat index(es) needs to be added for this query to work properly?
      1. USJagmag
    3. CO@Thilo - deliveryDate is datetime
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      1. POwhat index(es) needs to be added for this query to work properly?
      1. USTudor Constantin
 

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