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Subject Views Written By Posted
Sticky:  MySQL Performance Tuning (1 Posts)   447 Edwin Desouza 07/06/2015 10:37AM
Sticky:  MySQL Parser (1 Posts)   1,219 Edwin Desouza 04/03/2014 03:31PM
Sticky:  MySQL Optimizer: Features in MySQL 5.7 (1 Posts)   2,519 Edwin Desouza 12/18/2012 11:38AM
Sticky:  MySQL EXPLAIN (1 Posts)   3,176 Edwin Desouza 07/10/2012 10:32AM
Sticky:  MySQL Optimizer: Blogs (1 Posts)   8,588 Edwin DeSouza 04/28/2007 06:20PM
MySQL Query Rewrite Plugins   33 Edwin Desouza 02/02/2016 09:48PM
why left join can not use unique index?   265 h h 12/07/2015 08:30PM
Re: why left join can not use unique index?   63 Rick James 12/08/2015 08:46PM
Re: why left join can not use unique index?   55 h h 12/11/2015 03:20AM
Re: why left join can not use unique index?   48 Rick James 12/15/2015 11:08AM
This topic has been moved.:  A stored function to remove diacritics and other chars   20 Marc Elbet 12/11/2015 03:50AM
prepared statement query takes 3s for a few hundred lines - query issue   183 Michael W. 11/16/2015 11:14AM
Re: prepared statement query takes 3s for a few hundred lines - query issue   61 Rick James 11/30/2015 08:09PM
Re: prepared statement query takes 3s for a few hundred lines - query issue   68 Michael W. 12/01/2015 07:10AM
Re: prepared statement query takes 3s for a few hundred lines - query issue   56 Rick James 12/07/2015 01:17AM
Why not use index   180 zhang peng 11/08/2015 11:14PM
Re: Why not use index   72 Peter Brawley 11/09/2015 11:42AM
Re: Why not use index   67 zhang peng 11/11/2015 12:17AM
Re: Why not use index   74 Øystein Grøvlen 11/10/2015 10:35AM
Re: Why not use index   75 zhang peng 11/11/2015 12:15AM
Re: Why not use index   73 Øystein Grøvlen 11/11/2015 03:40AM
Re: Why not use index   65 zhang peng 11/11/2015 07:29PM
Re: Why not use index   68 Peter Brawley 11/11/2015 11:00PM
Re: Why not use index   62 Øystein Grøvlen 11/12/2015 01:48AM
Re: Why not use index   66 zhang peng 11/16/2015 12:17AM
Google Update Optimizer system   181 Anik Bhowmik 11/09/2015 09:35PM
Re: Google Update Optimizer system   76 Peter Brawley 11/09/2015 10:12PM
Re: Google Update Optimizer system   65 Jonathan Stephens 11/10/2015 01:02AM
Normalize dump table   328 Jose Valle 10/11/2015 08:37PM
Re: Normalize dump table   99 Jose Valle 10/11/2015 08:42PM
Re: Normalize dump table   98 Antonio Valle 10/13/2015 01:41PM
Re: Normalize dump table   97 Rick James 10/17/2015 07:15PM
optimize query for index using between and group by   397 Raghavendra raghu 08/28/2015 03:21AM
Re: optimize query for index using between and group by   182 Rick James 08/29/2015 09:56AM
Re: optimize query for index using between and group by   149 Raghavendra raghu 08/31/2015 02:34AM
Parsing in MySQL Workbench: the ANTLR age   333 Edwin Desouza 08/14/2015 10:16AM
MySQL Optimizer: Hints   425 Edwin Desouza 07/29/2015 10:07AM
Index not working for date field used in between query   534 Shrinivasa rao 07/22/2015 11:48PM
Re: Index not working for date field used in between query   214 Rick James 07/26/2015 08:28AM
MyISAM using 'wrong' index   471 Danny Stommen 06/08/2015 04:14AM
Re: MyISAM using 'wrong' index   198 Rick James 06/09/2015 11:53PM
Re: MyISAM using 'wrong' index   205 Danny Stommen 06/30/2015 03:22AM
Re: MyISAM using 'wrong' index   179 Rick James 07/02/2015 09:28PM
Re: MyISAM using 'wrong' index   197 Danny Stommen 07/03/2015 03:16AM
Re: MyISAM using 'wrong' index   228 Rick James 07/04/2015 11:10AM
Re: MyISAM using 'wrong' index   195 Danny Stommen 07/07/2015 01:56AM
Re: MyISAM using 'wrong' index   174 Edwin Desouza 07/07/2015 09:10AM
Need help understanding optimizer behavior in 5.6   497 Aaron Craven 06/22/2015 08:30AM
Re: Need help understanding optimizer behavior in 5.6   186 Aaron Craven 06/22/2015 08:31AM
Re: Need help understanding optimizer behavior in 5.6   180 Rick James 06/23/2015 07:00PM
Re: Need help understanding optimizer behavior in 5.6   174 Aaron Craven 06/24/2015 06:22AM
Re: Need help understanding optimizer behavior in 5.6   186 Rick James 06/25/2015 11:37PM
Re: Need help understanding optimizer behavior in 5.6   176 Aaron Craven 06/26/2015 06:56AM
Re: Need help understanding optimizer behavior in 5.6   179 Øystein Grøvlen 06/30/2015 05:46AM
Re: Need help understanding optimizer behavior in 5.6   225 Aaron Craven 06/30/2015 08:06AM
Re: Need help understanding optimizer behavior in 5.6   160 Aaron Craven 06/30/2015 08:16AM
Re: Need help understanding optimizer behavior in 5.6   182 Øystein Grøvlen 07/01/2015 03:49AM
Re: Need help understanding optimizer behavior in 5.6   172 Aaron Craven 07/01/2015 06:48AM
Re: Need help understanding optimizer behavior in 5.6   197 Edwin Desouza 07/01/2015 03:05PM
Re: Need help understanding optimizer behavior in 5.6   178 Aaron Craven 07/02/2015 07:48AM
MySQL 5.7: Optimizer Trace and EXPLAIN FORMAT=JSON   558 Edwin Desouza 05/25/2015 10:41AM
foreign key creation in a huge database   600 Raffael Vendrametto 03/05/2015 04:05PM
Please do NOT duplicate posts   303 Peter Brawley 03/05/2015 05:42PM
Query Taking 2.5hrs on 5.6.20 version   700 ch srinivas 03/04/2015 01:30AM
Re: Query Taking 2.5hrs on 5.6.20 version   308 Peter Brawley 03/04/2015 12:15PM
Re: Query Taking 2.5hrs on 5.6.20 version   295 Rick James 03/04/2015 08:18PM
Query optimisation advice   811 Paul Feely 01/08/2015 11:02PM
Re: Query optimisation advice   375 Rick James 01/10/2015 01:22AM
Re: Query optimisation advice   354 Paul Feely 01/11/2015 05:50PM
Re: Query optimisation advice   343 Rick James 01/12/2015 10:35PM
actual Size calculation of mysql table (engine innodb)   757 Afaque Ahmad Siddiqui 12/10/2014 09:38AM
Re: actual Size calculation of mysql table (engine innodb)   380 Rick James 12/12/2014 08:32PM
Re: actual Size calculation of mysql table (engine innodb)   351 Rick James 12/12/2014 08:36PM
MySQL cash optimization   904 Sasha Katsman 11/27/2014 06:33AM
Re: MySQL cash optimization   451 Peter Brawley 11/27/2014 04:34PM
Re: MySQL cash optimization   358 Sasha Katsman 12/09/2014 04:33AM
Re: MySQL cache optimization   322 Peter Brawley 12/09/2014 12:28PM
how to tune for optimizer_search_depth?   782 jongse park 12/03/2014 12:13AM
Re: how to tune for optimizer_search_depth?   398 Rick James 12/03/2014 11:33PM
Re: how to tune for optimizer_search_depth?   440 Øystein Grøvlen 12/08/2014 05:32AM
MySQL Optimizer Cost Model   857 Edwin Desouza 10/24/2014 10:37AM
Need help to create index on join statments   911 Neil Sorathia 10/08/2014 06:24PM
Re: Need help to create index on join statments   425 Neil Sorathia 10/09/2014 09:46AM
Re: Need help to create index on join statments   460 Rick James 10/11/2014 01:37PM
Better Performance for JOINs Not Using Indexes   850 Edwin Desouza 10/03/2014 01:48PM
A Multi-Table Trick to Speed up Single-Table UPDATE/DELETE Statements   931 Edwin Desouza 10/03/2014 01:47PM
MySQL 5.7: Optimizer Hints + Query Rewrite   872 Edwin Desouza 10/01/2014 08:53AM
Intermediate Query Results   979 Ashwini Singh 09/12/2014 08:37AM
Re: Intermediate Query Results   477 Rick James 09/13/2014 09:23PM
Re: Intermediate Query Results   555 Øystein Grøvlen 09/15/2014 05:42AM
All records scanning using "LIKe" and "IN" operaters   1,002 ch srinivas 06/28/2014 01:43PM
Re: All records scanning using "LIKe" and "IN" operaters   490 Peter Brawley 06/28/2014 02:22PM
Re: All records scanning using "LIKe" and "IN" operaters   453 Øystein Grøvlen 08/28/2014 03:47PM
Help me to optimize my sql query   891 GAURAV JAIN 08/21/2014 07:29AM
Re: Help me to optimize my sql query   438 Rick James 08/22/2014 06:50AM
How could this SQL be optimized?   1,093 feng guo 05/29/2014 11:26PM
Re: How could this SQL be optimized?   528 Øystein Grøvlen 05/30/2014 02:41AM
Re: How could this SQL be optimized?   596 feng guo 05/30/2014 02:46AM
Re: How could this SQL be optimized?   462 Marion Gordon 08/21/2014 11:03PM
Re: How could this SQL be optimized?   424 Øystein Grøvlen 08/22/2014 01:54AM
simple uses of order by datetime keep causing 'using filesort'   1,054 park albert 08/19/2014 05:44PM
Re: simple uses of order by datetime keep causing 'using filesort'   476 Rick James 08/20/2014 07:34PM
Expland and slow-query don't agree   950 Aram Mirzadeh 08/03/2014 06:24AM
Re: Expland and slow-query don't agree   460 Rick James 08/04/2014 01:23PM
Query not using index sporadically   1,113 Vinay NP 06/13/2014 07:51AM
Re: Query not using index sporadically   526 Rick James 06/18/2014 02:48PM
[HELP] Subquery Optimization   1,142 Pinoy Central 05/28/2014 08:56PM
MySQL 5.7: Re-factoring internals of Prepared Statements   945 Edwin Desouza 05/15/2014 12:29PM
BETWEEN a DATE and a hard place   1,217 Gerald Bayles 04/16/2014 02:07PM
Re: BETWEEN a DATE and a hard place   570 Rick James 04/18/2014 05:19PM
Re: BETWEEN a DATE and a hard place   595 Gerald Bayles 04/21/2014 08:36AM
Re: BETWEEN a DATE and a hard place   629 Rick James 04/24/2014 08:20PM
Re: BETWEEN a DATE and a hard place   599 Gerald Bayles 04/25/2014 06:36AM
Re: BETWEEN a DATE and a hard place   556 Rick James 04/26/2014 05:46AM
Re: BETWEEN a DATE and a hard place   559 Gerald Bayles 04/28/2014 07:27AM
Re: BETWEEN a DATE and a hard place   598 Gerald Bayles 05/01/2014 09:41AM
Re: BETWEEN a DATE and a hard place   652 Rick James 05/02/2014 11:39AM
MySQL Optimizer: Features in MySQL 5.7   957 Edwin Desouza 04/22/2014 10:03AM
Access mysql blob data from stored procedure   1,383 Kalpesh g 04/15/2014 04:38AM
Re: Access mysql blob data from stored procedure   607 Peter Brawley 04/15/2014 11:14AM
PARTITION table ADD INDEX ERROR 1041 (HY000) Out of memory   1,453 Andre Mikulec 03/05/2014 05:38PM
Re: PARTITION table ADD INDEX ERROR 1041 (HY000) Out of memory   734 Rick James 03/06/2014 11:21PM
Re: PARTITION table ADD INDEX ERROR 1041 (HY000) Out of memory   708 Rick James 03/06/2014 11:23PM
Explain estimate completely wrong for range when partitioned by day   1,650 Blake Harps 02/13/2014 01:23PM
Re: Explain estimate completely wrong for range when partitioned by day   673 Øystein Grøvlen 02/14/2014 01:29AM
Re: Explain estimate completely wrong for range when partitioned by day   732 Mattias Jonsson 02/14/2014 09:44AM
Re: Explain estimate completely wrong for range when partitioned by day   679 Blake Harps 02/14/2014 03:07PM
Re: Explain estimate completely wrong for range when partitioned by day   688 Blake Harps 02/14/2014 02:58PM
Re: Explain estimate completely wrong for range when partitioned by day   690 Edwin Desouza 02/15/2014 12:39PM
Re: Explain estimate completely wrong for range when partitioned by day   701 Rick James 02/15/2014 12:42PM
Re: Explain estimate completely wrong for range when partitioned by day   706 Blake Harps 03/04/2014 12:27PM
Re: Explain estimate completely wrong for range when partitioned by day   761 Mattias Jonsson 02/17/2014 04:29PM
Subquery with range uses filesort   1,982 David Marcus 11/16/2013 02:42PM
Re: Subquery with range uses filesort   823 Rick James 11/17/2013 07:42PM
Re: Subquery with range uses filesort   740 David Marcus 11/17/2013 08:01PM
Re: Subquery with range uses filesort   766 Rick James 11/18/2013 04:33PM
Re: Subquery with range uses filesort   983 David Marcus 11/18/2013 07:54PM
Re: Subquery with range uses filesort   824 Rick James 11/19/2013 04:10PM
Re: Subquery with range uses filesort   869 David Marcus 11/19/2013 08:36PM
Re: Subquery with range uses filesort   873 Rick James 11/21/2013 02:55PM
Re: Subquery with range uses filesort   940 David Marcus 12/05/2013 03:46PM
Re: Subquery with range uses filesort   755 Rick James 12/07/2013 02:10PM
Re: Subquery with range uses filesort   748 David Marcus 12/09/2013 06:08PM
Re: Subquery with range uses filesort   789 David Marcus 12/14/2013 09:51PM
Re: Subquery with range uses filesort   748 David Marcus 12/14/2013 10:17PM
Re: Subquery with range uses filesort   781 Rick James 12/15/2013 11:29PM
Re: Subquery with range uses filesort   868 David Marcus 12/17/2013 06:58PM
Re: Subquery with range uses filesort   781 Rick James 12/18/2013 05:49PM
Re: Subquery with range uses filesort   759 David Marcus 12/18/2013 08:28PM
Re: Subquery with range uses filesort   818 Rick James 12/19/2013 10:13PM
Re: Subquery with range uses filesort   787 David Marcus 12/19/2013 10:28PM
Re: Subquery with range uses filesort   737 Rick James 12/20/2013 07:06PM
Re: Subquery with range uses filesort   817 David Marcus 12/21/2013 07:36AM
Re: Subquery with range uses filesort   806 Rick James 12/22/2013 10:01AM
Re: Subquery with range uses filesort   848 David Marcus 12/22/2013 10:45AM
Re: Subquery with range uses filesort   765 David Marcus 12/25/2013 09:30PM
Optimizer executes inperformant subquery first   1,744 Martin Kirchner 12/06/2013 07:12AM
Re: Optimizer executes inperformant subquery first   716 Rick James 12/07/2013 02:30PM
Re: Optimizer executes inperformant subquery first   874 Martin Kirchner 12/07/2013 03:49PM
Re: Optimizer executes inperformant subquery first   967 Øystein Grøvlen 12/09/2013 09:48AM
Re: Optimizer executes inperformant subquery first   712 Martin Kirchner 12/18/2013 03:04AM
Re: Optimizer executes inperformant subquery first   742 Øystein Grøvlen 12/19/2013 02:45AM
Re: Optimizer executes inperformant subquery first   706 Martin Kirchner 12/20/2013 02:24AM
Re: Optimizer executes inperformant subquery first   698 Øystein Grøvlen 12/23/2013 08:07AM
Re: Optimizer executes inperformant subquery first   732 Rick James 12/23/2013 01:11PM
Re: Optimizer executes inperformant subquery first   809 Martin Kirchner 12/18/2013 05:16AM
Re: Optimizer executes inperformant subquery first   803 Rick James 12/18/2013 06:49PM
Re: Optimizer executes inperformant subquery first   749 Øystein Grøvlen 12/19/2013 02:49AM
my.cnf   1,402 Juan Medina 10/27/2013 02:08PM
Re: my.cnf   695 Rick James 10/29/2013 07:12PM
my.cnf optimization please help   1,982 Ivan Kratunkov 10/28/2013 03:39AM
Re: my.cnf optimization please help   789 Rick James 10/29/2013 07:10PM
MySQL Optimizer: Features in MySQL 5.7   1,156 Edwin Desouza 10/18/2013 09:33AM
I need help in optimzing a order by clause in a join query   1,309 George Maharis 10/08/2013 12:09PM
Re: I need help in optimzing a order by clause in a join query   739 Rick James 10/10/2013 09:34PM
Re: I need help in optimzing a order by clause in a join query   730 George Maharis 10/12/2013 02:07PM
Re: I need help in optimzing a order by clause in a join query   695 Rick James 10/16/2013 08:36PM
MySQL My.cnf Config Help   1,434 Mathieu Louis 10/03/2013 09:32PM
Very slow dependent subquery   1,614 patrick canarelli 09/18/2013 03:06AM
Re: Very slow dependent subquery   917 Øystein Grøvlen 09/18/2013 07:06AM
Re: Very slow dependent subquery   863 patrick canarelli 09/18/2013 07:51AM
Re: Very slow dependent subquery   856 Øystein Grøvlen 09/18/2013 02:57PM
Re: Very slow dependent subquery   780 Peter Brawley 09/18/2013 02:13PM
Re: Very slow dependent subquery   809 patrick canarelli 09/18/2013 03:10PM
Re: Very slow dependent subquery   810 Rick James 09/24/2013 10:04PM
Re: Very slow dependent subquery   914 patrick canarelli 09/25/2013 12:53AM
big database +1 million rows/days   1,667 khaoula el hammoumi 09/11/2013 04:06AM
Re: big database +1 million rows/days   810 khaoula el hammoumi 09/12/2013 01:37AM
Re: big database +1 million rows/days   794 Rick James 09/13/2013 10:59PM
Optimize query join with 25,000 records   1,442 Andrea Presazzi 08/26/2013 02:27AM
Re: Optimize query join with 25,000 records   734 Rick James 08/31/2013 04:19PM
Index not used for JOIN on compound key plus WHERE range filter   2,182 Chad B 08/15/2013 09:24AM
Re: Index not used for JOIN on compound key plus WHERE range filter   992 Chad B 08/15/2013 10:44AM
Re: Index not used for JOIN on compound key plus WHERE range filter   880 Rick James 08/31/2013 04:13PM
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