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mysql:12819

From: tatematsu <tatematsu <tatemax@xxxxxxxxxx>>
Date: Tue, 28 Feb 2006 11:50:11 +0900
Subject: [mysql 12819] Re: SELECTクエリの速度が安定しない

立松です.

|mysql> select SQL_NO_CACHE SQL_BIG_RESULT count(*) from hoge where foo > 100;

SQL_BIG_RESULTはGROUP BY やDISTINCTと一緒に使うので関係ないですね.

mysql> select SQL_NO_CACHE count(*) from hoge where foo > 100;

でどうでしょうか.

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     12810 2006-02-27 17:46 [shuetsu <shuetsu@xxx] SELECTクエリの速度が安定しない          
     12811 2006-02-27 18:07 ┣[遠藤 俊裕 <endo@xxxx]                                       
     12812 2006-02-27 19:11 ┃┗[shuetsu <shuetsu@xxx]                                     
     12815 2006-02-27 20:09 ┃ ┗[遠藤 俊裕 <endo@xxxx]                                   
     12816 2006-02-28 08:33 ┃  ┗[shuetsu <shuetsu@xxx]                                 
     12813 2006-02-27 19:43 ┣[Shuji Yamakawa <hzv0]                                       
     12814 2006-02-27 19:45 ┗[SAKAI Kei <sak@xxxxx]                                       
     12817 2006-02-28 10:55  ┗[shuetsu <shuetsu@xxx]                                     
     12818 2006-02-28 11:29   ┣[tatematsu <tatemax@x]                                   
->   12819 2006-02-28 11:50   ┃┗[tatematsu <tatemax@x]                                 
     12820 2006-02-28 13:56   ┃ ┗[shuetsu <shuetsu@xxx]                               
     12821 2006-02-28 14:18   ┃  ┗[tatematsu <tatemax@x]                             
     12822 2006-02-28 14:37   ┃   ┗[shuetsu <shuetsu@xxx]                           
     12823 2006-02-28 14:49   ┗[とみたまさひろ <tomm]                                   
     12824 2006-02-28 17:13    ┗[shuetsu <shuetsu@xxx]