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Editorial Team
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Asked: 2026-05-24T09:39:36+00:00

I have an SQL, which takes more than minute to execute, which is too

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I have an SQL, which takes more than minute to execute, which is too much for me, can someone give advice on optimization.

UPDATE 2 – a little modified sql with increase of speed: 

SELECT STRAIGHT_JOIN
kw.`id` ,  kw.`clientid` ,  kw.`day` ,  kw.`campaignid` ,  kw.`campaign` ,  kw.`adgroupid`,  kw.`adgroup` ,  kw.`matchtype` ,  
kw.`firstpagecpc` ,  kw.`keywordtext` ,  kw.`qualityscore` ,  kw.`maxcpc` ,  kw.`avgcpm` ,  kw.`status` ,  kw.`keywordtext` ,  
kw.`matchtype` ,

SUM( kw.`impressions` )                                                  AS impressions,
SUM(  kw.`clicks` )                                                      AS clicks,
SUM(  kw.`impressions` *  kw.`avgposition` ) / SUM(  kw.`impressions` )  AS avgposition, 
SUM(  kw.`cost` )                                                        AS cost,
(SUM(  kw.`clicks` ) / SUM(  kw.`impressions` ) *100)                    AS ctr,
(SUM(  kw.`cost` ) / SUM(  kw.`clicks` ))                                AS avgcpc,
IF(kw.maxcpc = 0,kw.maxcpc,ad.defaultmaxcpc)                             AS maxcpc

FROM  `keywordsreport`                                                   AS kw
JOIN  `adgroupreport`                                                    AS ad 
ON (kw.clientid = ad.clientid AND kw.`day` = ad.day)

WHERE  
kw.`campaignid` = '55347673'
AND kw.`clientid` = '6588826821'
AND kw.`day` BETWEEN '2011-07-01' AND '2011-07-31'
AND (kw.`adid` = '' OR kw.`adid` = '0')
GROUP BY kw.`keywordtext`, kw.`matchtype`

keywordsreport table indexes:

PRIMARY  PRIMARY 235232  id

Unique   UNIQUE  235232  adgroupid
                         day
                         keywordtext
                         matchtype
                         adid
INDEX    INDEX   16802   keywordtext
                          matchtype
                          clientid

CLIENTIDDAY  INDEX   6637 clientid
                          day

adgroupreport table indexes:

PRIMARY          PRIMARY 1328238  id

CLIENTIDDAY  INDEX   6447     clientid
                                  day

UPDATE 3:
Sample query with EXPLAIN:

    i  select_type  table   type    possible_keys                                      key                key_len   ref     rows    Extra
    1   SIMPLE      kw      range   CLIENTID,CLIENTIDDAY,ADIDDAY,CAMPAIGNCLIENTDAY     CAMPAIGNCLIENTDAY  211   NULL    350 Using where; Using temporary; Using filesort
    1   SIMPLE      ad      range   CLIENTIDDAY                                        CLIENTIDDAY        65    NULL    42464   Using where

In each table: keywordsreport AND adgroupreport there could be ~ 1 000 000 records.

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1 Answer

  1. Editorial Team

    I would go one step further… A client can have many campaigns, so your index should be on the smallest criteria first. I would have an index on

    ( CampaignID, ClientId, Day )

    then just for grins to match the anticipated index for optimizing, just adjust the WHERE clause to 

    WHERE
         kw.campaignid = '23213231232'
      AND kw.clientid = '$clientid'
      AND kw.`day` BETWEEN '2011-07-31' AND '2011-07-01'
      AND ( kw.adid = '' OR kw.adid = '0')
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