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POPostgreslq Explain analyse : hidden time
 

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  1. POPostgreslq Explain analyse : hidden time
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    <p>I've a long query and <code>explain analyze</code> isn't helping.</p> <p>Version of PostgreSQL : 9.1</p> <p>The current plan:</p> <p><a href="http://explain.depesz.com/s/sWG" rel="nofollow">http://explain.depesz.com/s/sWG</a></p> <p>The query :</p> <pre><code>SELECT temps_mois.rfoperyea AS c0, dwhinv.dwhinv___rfovsnide AS c1, rfoadv_1.rfoadvsup AS c2, rfoadv_2.rfoadvsup AS c3, rsaaev_3.rsaaevsup AS c4, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'LABO' AND dwhinv.dwhinv___rfoindide = '17' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m0, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'LABO' AND dwhinv.dwhinv___rfoindide = '18' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m1, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'LABO' AND dwhinv.dwhinv___rfoindide = '15' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m2, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'LABO' AND dwhinv.dwhinv___rfoindide = '16' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m3, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '20' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m4, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '17' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m5, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '18' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m6, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '15' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m7, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '19' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m8, Sum(( CASE WHEN dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '16' THEN dwhinv.dwhinvqte ELSE 0 END )) AS m9 FROM rfoper_temps_mois AS temps_mois, dwhinv AS dwhinv, rfoadv AS rfoadv_1, rfoadv AS rfoadv_2, rsaaev AS rsaaev_3 WHERE ( temps_mois.rfoper___rforefide = 'REF' ) AND ( dwhinv.dwhinv___rforefide = 'REF' AND ( ( dwhinv.dwhinv___rfodomide = 'LABO' AND dwhinv.dwhinv___rfoindide = '17' ) OR ( dwhinv.dwhinv___rfodomide = 'LABO' AND dwhinv.dwhinv___rfoindide = '18' ) OR ( dwhinv.dwhinv___rfodomide = 'LABO' AND dwhinv.dwhinv___rfoindide = '15' ) OR ( dwhinv.dwhinv___rfodomide = 'LABO' AND dwhinv.dwhinv___rfoindide = '16' ) OR ( dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '20' ) OR ( dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '17' ) OR ( dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '18' ) OR ( dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '15' ) OR ( dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '19' ) OR ( dwhinv.dwhinv___rfodomide = 'ANAPATH' AND dwhinv.dwhinv___rfoindide = '16' ) ) ) AND dwhinv.dwhinvdtd = temps_mois.rfoperdtd AND temps_mois.rfoperyea IN ( '2011', '2012' ) AND dwhinv.dwhinv___rfovsnide = 'version' AND ( rfoadv_1.rfoadv___rfovdeide = 'STRC' AND rfoadv_1.rfoadvrvs = 1 AND rfoadv_1.rfoadv___rforefide = 'REF' ) AND dwhinv.dwhinv_d2rfodstide = rfoadv_1.rfoadvinf AND rfoadv_1.rfoadvsup = 'REF' AND ( rfoadv_2.rfoadv___rfovdeide = 'STRC_REF' AND rfoadv_2.rfoadvrvs = 1 AND rfoadv_2.rfoadv___rforefide = 'REF' ) AND dwhinv.dwhinv_p2rfodstide = rfoadv_2.rfoadvinf AND rfoadv_2.rfoadvsup IN ( '01', '04', '05', '06', '07', '99', 'REF', 'CR2107', 'CR2108', 'CR2109', 'CR2110', 'CR2111', 'CR2114', 'CR2116', 'CR2126', 'CR4101', 'CR4201' ) AND ( rsaaev_3.rsaaev___rsavedide = 'PRESTA_ACTE' AND rsaaev_3.rsaaevrvs = 1 AND rsaaev_3.rsaaev___rforefide = 'REF' ) AND dwhinv.dwhinv___rsaedtide = rsaaev_3.rsaaevinf AND rsaaev_3.rsaaevsup IN ( 'PRISE_EN_CHARGE', 'REG_EXT', 'REG_HOSPI_SEANCE' ) GROUP BY temps_mois.rfoperyea, dwhinv.dwhinv___rfovsnide, rfoadv_1.rfoadvsup, rfoadv_2.rfoadvsup, rsaaev_3.rsaaevsup </code></pre> <p>It seems like several seconds elapse between the HashJoin and the Hashaggregate. Hashjoin takes 1200 to 1600ms. With the HashAggregate it jumps to 5645ms.</p> <p>Might anyone else who ever encountered this problem be able to explain the difference?</p>
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      1. POPostgreslq Explain analyse : hidden time
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    1. COI cleaned up your post and plan a bit, but it would help if you rephrased and reformatted it the way you'd want it to be, along with your actual schema, query, and what you're trying to achieve. As things are, it's a bit hard to follow.
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      1. POPostgreslq Explain analyse : hidden time
      1. USDenis de Bernardy
    2. COThat's only *part of the query plan* - you've cut parts of it off. Please show the full plan. For big plans like this please past the plan to http://explain.depesz.com/ and provide a link to that as well as including the in-text copy. It's very helpful for examining big plans. Also: **PostgreSQL version and exact query text please**. Comment here when you've edited your question to correct those issues so that Denis and I are notified of the change.
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      1. USCraig Ringer
    3. COI use your site, thanx for the tip. I've add the query, but it is partly generated so i will be hard to modify.
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