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Subject Views Written By Posted
Sticky:  MySQL 8.0: CTEs (1 Posts)   125 Edwin Desouza 10/18/2016 09:38AM
Sticky:  MySQL 8.0: Optimizer & Parser (1 Posts)   193 Edwin Desouza 09/13/2016 10:54AM
Sticky:  MySQL Performance Tuning (1 Posts)   1,005 Edwin Desouza 07/06/2015 10:37AM
Sticky:  MySQL Parser (1 Posts)   1,695 Edwin Desouza 04/03/2014 03:31PM
Sticky:  MySQL Optimizer: Features in MySQL 5.7 (1 Posts)   3,083 Edwin Desouza 12/18/2012 11:38AM
Sticky:  MySQL EXPLAIN (1 Posts)   3,643 Edwin Desouza 07/10/2012 10:32AM
Sticky:  MySQL Optimizer: Blogs (1 Posts)   9,149 Edwin DeSouza 04/28/2007 06:20PM
primary key vs covered index   33 marcin kot 11/30/2016 09:55AM
Re: primary key vs covered index   23 Øystein Grøvlen 12/01/2016 01:39AM
Re: primary key vs covered index   17 marcin kot 12/01/2016 03:38AM
Re: primary key vs covered index   15 Øystein Grøvlen 12/01/2016 03:57AM
Re: primary key vs covered index   16 marcin kot 12/01/2016 04:16AM
Re: primary key vs covered index   23 Øystein Grøvlen 12/01/2016 04:25AM
Optimize subquery, replace IN() with JOIN   66 Miron jajtic 11/15/2016 02:37PM
Re: Optimize subquery, replace IN() with JOIN   45 Peter Brawley 11/15/2016 03:34PM
Re: Optimize subquery, replace IN() with JOIN   36 Miron jajtic 11/15/2016 04:25PM
Re: Optimize subquery, replace IN() with JOIN   29 Rick James 11/17/2016 08:11PM
Re: Optimize subquery, replace IN() with JOIN   23 Peter Brawley 11/22/2016 02:44PM
Re: Optimize subquery, replace IN() with JOIN   41 Miron jajtic 11/16/2016 04:03AM
Re: Optimize subquery, replace IN() with JOIN   34 Peter Brawley 11/16/2016 12:51PM
Re: Optimize subquery, replace IN() with JOIN   35 Miron jajtic 11/16/2016 03:22PM
Re: Optimize subquery, replace IN() with JOIN   35 Peter Brawley 11/16/2016 04:44PM
Re: Optimize subquery, replace IN() with JOIN   32 Øystein Grøvlen 11/16/2016 01:50AM
Re: Optimize subquery, replace IN() with JOIN   31 Miron jajtic 11/16/2016 04:01AM
Re: Optimize subquery, replace IN() with JOIN   36 Øystein Grøvlen 11/16/2016 06:23AM
MySQL 8.0: Refactoring and Improving the Parser   57 Edwin Desouza 11/22/2016 10:58AM
MySQL subquery   95 harry sheng 10/27/2016 02:51PM
Re: MySQL subquery   47 Øystein Grøvlen 10/28/2016 01:03AM
Re: MySQL subquery   42 harry sheng 11/06/2016 08:50PM
Re: MySQL subquery   39 Øystein Grøvlen 11/07/2016 01:39AM
How to Analyze and Tune MySQL Queries for Better Performance   92 Edwin Desouza 10/21/2016 09:58AM
Index on timestamp   99 Adeline M 10/14/2016 08:47AM
Re: Index on timestamp   49 Rick James 10/16/2016 04:40PM
MySQL 8.0: Descending Indexes   105 Edwin Desouza 10/12/2016 10:00AM
Pivot table with dynamic columns   134 Aram Mirzadeh 09/30/2016 06:03PM
Re: Pivot table with dynamic columns   62 Rick James 10/03/2016 03:40PM
inner join vs left join - huge performance difference   153 michael cook 07/06/2016 09:32AM
Re: inner join vs left join - huge performance difference   66 Peter Brawley 07/06/2016 12:00PM
Re: inner join vs left join - huge performance difference   62 michael cook 07/06/2016 12:18PM
Re: inner join vs left join - huge performance difference   58 michael cook 07/06/2016 12:29PM
Re: inner join vs left join - huge performance difference   58 Peter Brawley 07/06/2016 12:36PM
Re: inner join vs left join - huge performance difference   67 michael cook 07/06/2016 12:44PM
Re: inner join vs left join - huge performance difference   62 michael cook 07/06/2016 01:51PM
Re: inner join vs left join - huge performance difference   63 Peter Brawley 07/06/2016 02:32PM
Re: inner join vs left join - huge performance difference   59 michael cook 07/06/2016 02:41PM
Re: inner join vs left join - huge performance difference   61 Rick James 07/08/2016 11:58PM
Re: inner join vs left join - huge performance difference   65 Peter Brawley 07/09/2016 09:54AM
Re: inner join vs left join - huge performance difference   69 Isabella Swan 09/27/2016 07:13AM
This topic has been moved.:  INSERT AfTER LEFT JOIN creates duplicate records   10 Brad Liu 09/20/2016 02:09PM
MySQL 8.0: Invisible Indexes   136 Edwin Desouza 09/20/2016 09:21AM
Preparse Query Rewrite Plugin DLL   289 Francois Haddad 08/12/2016 05:16PM
Re: Preparse Query Rewrite Plugin DLL   93 Georgi Kodinov 09/08/2016 02:23AM
Re: Preparse Query Rewrite Plugin DLL   89 Francois Haddad 09/14/2016 07:04PM
Re: Preparse Query Rewrite Plugin DLL   84 Tor Didriksen 09/15/2016 01:40AM
Re: Preparse Query Rewrite Plugin DLL   83 Francois Haddad 09/15/2016 11:34AM
why the two query has a different execute plan?   220 h h 08/22/2016 02:55AM
Re: why the two query has a different execute plan?   102 Øystein Grøvlen 08/22/2016 05:08AM
Re: why the two query has a different execute plan?   94 Rick James 08/26/2016 02:29PM
This topic has been moved.:  Preparse Query Rewrite Plugin DLL   79 Francois Haddad 08/15/2016 09:28AM
how to optimize this sql?   216 h h 07/07/2016 07:38PM
Re: how to optimize this sql?   127 Peter Brawley 07/08/2016 10:59AM
Re: how to optimize this sql?   114 h h 07/12/2016 09:01PM
Re: how to optimize this sql?   116 Rick James 07/09/2016 11:04PM
Re: how to optimize this sql?   116 h h 07/12/2016 09:08PM
Re: how to optimize this sql?   105 Rick James 07/14/2016 12:52PM
Indexing for date column for range query   251 duc minh 07/05/2016 11:04PM
Re: Indexing for date column for range query   118 Rick James 07/09/2016 10:47PM
Help with partially unique index   290 El T 06/22/2016 04:44AM
Re: Help with partially unique index   135 Rick James 06/25/2016 10:45PM
Re: Help with partially unique index   121 El T 07/02/2016 03:33PM
Re: Help with partially unique index   128 Rick James 07/04/2016 12:50PM
Explain plans for InnoDB and Memory Engines   359 Jagan Kumar 05/02/2016 03:15PM
Re: Explain plans for InnoDB and Memory Engines   180 Peter Brawley 05/02/2016 09:23PM
Re: Explain plans for InnoDB and Memory Engines   170 Øystein Grøvlen 05/04/2016 05:17AM
Re: Explain plans for InnoDB and Memory Engines   174 Rick James 05/05/2016 10:18PM
MySQL Query Rewrite Plugins   477 Edwin Desouza 02/02/2016 09:48PM
why left join can not use unique index?   776 h h 12/07/2015 08:30PM
Re: why left join can not use unique index?   307 Rick James 12/08/2015 08:46PM
Re: why left join can not use unique index?   291 h h 12/11/2015 03:20AM
Re: why left join can not use unique index?   297 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   627 Michael W. 11/16/2015 11:14AM
Re: prepared statement query takes 3s for a few hundred lines - query issue   275 Rick James 11/30/2015 08:09PM
Re: prepared statement query takes 3s for a few hundred lines - query issue   322 Michael W. 12/01/2015 07:10AM
Re: prepared statement query takes 3s for a few hundred lines - query issue   287 Rick James 12/07/2015 01:17AM
Why not use index   703 zhang peng 11/08/2015 11:14PM
Re: Why not use index   305 Peter Brawley 11/09/2015 11:42AM
Re: Why not use index   299 zhang peng 11/11/2015 12:17AM
Re: Why not use index   294 Øystein Grøvlen 11/10/2015 10:35AM
Re: Why not use index   327 zhang peng 11/11/2015 12:15AM
Re: Why not use index   301 Øystein Grøvlen 11/11/2015 03:40AM
Re: Why not use index   304 zhang peng 11/11/2015 07:29PM
Re: Why not use index   329 Peter Brawley 11/11/2015 11:00PM
Re: Why not use index   277 Øystein Grøvlen 11/12/2015 01:48AM
Re: Why not use index   298 zhang peng 11/16/2015 12:17AM
Google Update Optimizer system   619 Anik Bhowmik 11/09/2015 09:35PM
Re: Google Update Optimizer system   311 Peter Brawley 11/09/2015 10:12PM
Re: Google Update Optimizer system   296 Jonathan Stephens 11/10/2015 01:02AM
Normalize dump table   901 Jose Valle 10/11/2015 08:37PM
Re: Normalize dump table   290 Jose Valle 10/11/2015 08:42PM
Re: Normalize dump table   314 Antonio Valle 10/13/2015 01:41PM
Re: Normalize dump table   316 Rick James 10/17/2015 07:15PM
optimize query for index using between and group by   899 Raghavendra raghu 08/28/2015 03:21AM
Re: optimize query for index using between and group by   470 Rick James 08/29/2015 09:56AM
Re: optimize query for index using between and group by   379 Raghavendra raghu 08/31/2015 02:34AM
Parsing in MySQL Workbench: the ANTLR age   762 Edwin Desouza 08/14/2015 10:16AM
MySQL Optimizer: Hints   944 Edwin Desouza 07/29/2015 10:07AM
Index not working for date field used in between query   1,206 Shrinivasa rao 07/22/2015 11:48PM
Re: Index not working for date field used in between query   530 Rick James 07/26/2015 08:28AM
MyISAM using 'wrong' index   913 Danny Stommen 06/08/2015 04:14AM
Re: MyISAM using 'wrong' index   466 Rick James 06/09/2015 11:53PM
Re: MyISAM using 'wrong' index   469 Danny Stommen 06/30/2015 03:22AM
Re: MyISAM using 'wrong' index   440 Rick James 07/02/2015 09:28PM
Re: MyISAM using 'wrong' index   459 Danny Stommen 07/03/2015 03:16AM
Re: MyISAM using 'wrong' index   508 Rick James 07/04/2015 11:10AM
Re: MyISAM using 'wrong' index   448 Danny Stommen 07/07/2015 01:56AM
Re: MyISAM using 'wrong' index   433 Edwin Desouza 07/07/2015 09:10AM
Need help understanding optimizer behavior in 5.6   1,063 Aaron Craven 06/22/2015 08:30AM
Re: Need help understanding optimizer behavior in 5.6   488 Aaron Craven 06/22/2015 08:31AM
Re: Need help understanding optimizer behavior in 5.6   444 Rick James 06/23/2015 07:00PM
Re: Need help understanding optimizer behavior in 5.6   430 Aaron Craven 06/24/2015 06:22AM
Re: Need help understanding optimizer behavior in 5.6   428 Rick James 06/25/2015 11:37PM
Re: Need help understanding optimizer behavior in 5.6   447 Aaron Craven 06/26/2015 06:56AM
Re: Need help understanding optimizer behavior in 5.6   429 Øystein Grøvlen 06/30/2015 05:46AM
Re: Need help understanding optimizer behavior in 5.6   611 Aaron Craven 06/30/2015 08:06AM
Re: Need help understanding optimizer behavior in 5.6   435 Aaron Craven 06/30/2015 08:16AM
Re: Need help understanding optimizer behavior in 5.6   421 Øystein Grøvlen 07/01/2015 03:49AM
Re: Need help understanding optimizer behavior in 5.6   423 Aaron Craven 07/01/2015 06:48AM
Re: Need help understanding optimizer behavior in 5.6   475 Edwin Desouza 07/01/2015 03:05PM
Re: Need help understanding optimizer behavior in 5.6   446 Aaron Craven 07/02/2015 07:48AM
MySQL 5.7: Optimizer Trace and EXPLAIN FORMAT=JSON   1,034 Edwin Desouza 05/25/2015 10:41AM
foreign key creation in a huge database   1,019 Raffael Vendrametto 03/05/2015 04:05PM
Please do NOT duplicate posts   531 Peter Brawley 03/05/2015 05:42PM
Query Taking 2.5hrs on 5.6.20 version   1,261 ch srinivas 03/04/2015 01:30AM
Re: Query Taking 2.5hrs on 5.6.20 version   591 Peter Brawley 03/04/2015 12:15PM
Re: Query Taking 2.5hrs on 5.6.20 version   534 Rick James 03/04/2015 08:18PM
Query optimisation advice   1,307 Paul Feely 01/08/2015 11:02PM
Re: Query optimisation advice   681 Rick James 01/10/2015 01:22AM
Re: Query optimisation advice   646 Paul Feely 01/11/2015 05:50PM
Re: Query optimisation advice   625 Rick James 01/12/2015 10:35PM
actual Size calculation of mysql table (engine innodb)   1,198 Afaque Ahmad Siddiqui 12/10/2014 09:38AM
Re: actual Size calculation of mysql table (engine innodb)   622 Rick James 12/12/2014 08:32PM
Re: actual Size calculation of mysql table (engine innodb)   630 Rick James 12/12/2014 08:36PM
MySQL cash optimization   1,387 Sasha Katsman 11/27/2014 06:33AM
Re: MySQL cash optimization   740 Peter Brawley 11/27/2014 04:34PM
Re: MySQL cash optimization   576 Sasha Katsman 12/09/2014 04:33AM
Re: MySQL cache optimization   558 Peter Brawley 12/09/2014 12:28PM
how to tune for optimizer_search_depth?   1,277 jongse park 12/03/2014 12:13AM
Re: how to tune for optimizer_search_depth?   713 Rick James 12/03/2014 11:33PM
Re: how to tune for optimizer_search_depth?   757 Øystein Grøvlen 12/08/2014 05:32AM
MySQL Optimizer Cost Model   1,304 Edwin Desouza 10/24/2014 10:37AM
Need help to create index on join statments   1,358 Neil Sorathia 10/08/2014 06:24PM
Re: Need help to create index on join statments   645 Neil Sorathia 10/09/2014 09:46AM
Re: Need help to create index on join statments   662 Rick James 10/11/2014 01:37PM
Better Performance for JOINs Not Using Indexes   1,258 Edwin Desouza 10/03/2014 01:48PM
A Multi-Table Trick to Speed up Single-Table UPDATE/DELETE Statements   1,394 Edwin Desouza 10/03/2014 01:47PM
MySQL 5.7: Optimizer Hints + Query Rewrite   1,331 Edwin Desouza 10/01/2014 08:53AM
Intermediate Query Results   1,577 Ashwini Singh 09/12/2014 08:37AM
Re: Intermediate Query Results   731 Rick James 09/13/2014 09:23PM
Re: Intermediate Query Results   862 Øystein Grøvlen 09/15/2014 05:42AM
All records scanning using "LIKe" and "IN" operaters   1,488 ch srinivas 06/28/2014 01:43PM
Re: All records scanning using "LIKe" and "IN" operaters   714 Peter Brawley 06/28/2014 02:22PM
Re: All records scanning using "LIKe" and "IN" operaters   686 Øystein Grøvlen 08/28/2014 03:47PM
Help me to optimize my sql query   1,329 GAURAV JAIN 08/21/2014 07:29AM
Re: Help me to optimize my sql query   684 Rick James 08/22/2014 06:50AM
How could this SQL be optimized?   1,577 feng guo 05/29/2014 11:26PM
Re: How could this SQL be optimized?   787 Øystein Grøvlen 05/30/2014 02:41AM
Re: How could this SQL be optimized?   852 feng guo 05/30/2014 02:46AM
Re: How could this SQL be optimized?   667 Marion Gordon 08/21/2014 11:03PM
Re: How could this SQL be optimized?   655 Øystein Grøvlen 08/22/2014 01:54AM
simple uses of order by datetime keep causing 'using filesort'   1,523 park albert 08/19/2014 05:44PM
Re: simple uses of order by datetime keep causing 'using filesort'   732 Rick James 08/20/2014 07:34PM
Expland and slow-query don't agree   1,379 Aram Mirzadeh 08/03/2014 06:24AM
Re: Expland and slow-query don't agree   694 Rick James 08/04/2014 01:23PM
Query not using index sporadically   1,594 Vinay NP 06/13/2014 07:51AM
Re: Query not using index sporadically   813 Rick James 06/18/2014 02:48PM
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