Skip navigation links

MySQL Forums :: Optimizer & Parser


Advanced Search

Announcements Last Post
MySQL for Visual Studio 1.2.0 alpha has been released 04/21/2014 11:51AM
MySQL Enterprise Monitor 2.3.16 has been released 04/17/2014 11:45AM
MySQL Enterprise Monitor 3.0.9 has been released 04/14/2014 05:53PM
MySQL Cluster 7.2.16 has been released 04/09/2014 04:32AM
MySQL Cluster 7.3.5 has been released 04/07/2014 08:15PM
Pages:  1 2 3 4 5 ...Last Next
Current Page: 1 of 16
Subject Views Written By Posted
Sticky:  MySQL Parser (1 Posts)   90 Edwin Desouza 04/03/2014 03:31PM
Sticky:  MySQL Optimizer: Features in MySQL 5.7 (1 Posts)   1,446 Edwin Desouza 12/18/2012 11:38AM
Sticky:  MySQL EXPLAIN (1 Posts)   2,199 Edwin Desouza 07/10/2012 10:32AM
Sticky:  MySQL Optimizer: Blogs (1 Posts)   7,552 Edwin DeSouza 04/28/2007 06:20PM
BETWEEN a DATE and a hard place   75 Gerald Bayles 04/16/2014 02:07PM
Re: BETWEEN a DATE and a hard place   21 Rick James 04/18/2014 05:19PM
Re: BETWEEN a DATE and a hard place   19 Gerald Bayles 04/21/2014 08:36AM
Re: BETWEEN a DATE and a hard place   2 Rick James 04/24/2014 08:20PM
MySQL Optimizer: Features in MySQL 5.7   27 Edwin Desouza 04/22/2014 10:03AM
Access mysql blob data from stored procedure   65 Kalpesh g 04/15/2014 04:38AM
Re: Access mysql blob data from stored procedure   14 Peter Brawley 04/15/2014 11:14AM
PARTITION table ADD INDEX ERROR 1041 (HY000) Out of memory   130 Andre Mikulec 03/05/2014 05:38PM
Re: PARTITION table ADD INDEX ERROR 1041 (HY000) Out of memory   48 Rick James 03/06/2014 11:21PM
Re: PARTITION table ADD INDEX ERROR 1041 (HY000) Out of memory   48 Rick James 03/06/2014 11:23PM
Explain estimate completely wrong for range when partitioned by day   216 Blake Harps 02/13/2014 01:23PM
Re: Explain estimate completely wrong for range when partitioned by day   82 Øystein Grøvlen 02/14/2014 01:29AM
Re: Explain estimate completely wrong for range when partitioned by day   79 Mattias Jonsson 02/14/2014 09:44AM
Re: Explain estimate completely wrong for range when partitioned by day   77 Blake Harps 02/14/2014 03:07PM
Re: Explain estimate completely wrong for range when partitioned by day   78 Blake Harps 02/14/2014 02:58PM
Re: Explain estimate completely wrong for range when partitioned by day   72 Edwin Desouza 02/15/2014 12:39PM
Re: Explain estimate completely wrong for range when partitioned by day   77 Rick James 02/15/2014 12:42PM
Re: Explain estimate completely wrong for range when partitioned by day   51 Blake Harps 03/04/2014 12:27PM
Re: Explain estimate completely wrong for range when partitioned by day   72 Mattias Jonsson 02/17/2014 04:29PM
Subquery with range uses filesort   436 David Marcus 11/16/2013 02:42PM
Re: Subquery with range uses filesort   140 Rick James 11/17/2013 07:42PM
Re: Subquery with range uses filesort   127 David Marcus 11/17/2013 08:01PM
Re: Subquery with range uses filesort   131 Rick James 11/18/2013 04:33PM
Re: Subquery with range uses filesort   147 David Marcus 11/18/2013 07:54PM
Re: Subquery with range uses filesort   118 Rick James 11/19/2013 04:10PM
Re: Subquery with range uses filesort   125 David Marcus 11/19/2013 08:36PM
Re: Subquery with range uses filesort   136 Rick James 11/21/2013 02:55PM
Re: Subquery with range uses filesort   121 David Marcus 12/05/2013 03:46PM
Re: Subquery with range uses filesort   115 Rick James 12/07/2013 02:10PM
Re: Subquery with range uses filesort   115 David Marcus 12/09/2013 06:08PM
Re: Subquery with range uses filesort   99 David Marcus 12/14/2013 09:51PM
Re: Subquery with range uses filesort   96 David Marcus 12/14/2013 10:17PM
Re: Subquery with range uses filesort   106 Rick James 12/15/2013 11:29PM
Re: Subquery with range uses filesort   140 David Marcus 12/17/2013 06:58PM
Re: Subquery with range uses filesort   105 Rick James 12/18/2013 05:49PM
Re: Subquery with range uses filesort   92 David Marcus 12/18/2013 08:28PM
Re: Subquery with range uses filesort   96 Rick James 12/19/2013 10:13PM
Re: Subquery with range uses filesort   92 David Marcus 12/19/2013 10:28PM
Re: Subquery with range uses filesort   90 Rick James 12/20/2013 07:06PM
Re: Subquery with range uses filesort   92 David Marcus 12/21/2013 07:36AM
Re: Subquery with range uses filesort   102 Rick James 12/22/2013 10:01AM
Re: Subquery with range uses filesort   106 David Marcus 12/22/2013 10:45AM
Re: Subquery with range uses filesort   91 David Marcus 12/25/2013 09:30PM
Optimizer executes inperformant subquery first   356 Martin Kirchner 12/06/2013 07:12AM
Re: Optimizer executes inperformant subquery first   120 Rick James 12/07/2013 02:30PM
Re: Optimizer executes inperformant subquery first   138 Martin Kirchner 12/07/2013 03:49PM
Re: Optimizer executes inperformant subquery first   163 Øystein Grøvlen 12/09/2013 09:48AM
Re: Optimizer executes inperformant subquery first   106 Martin Kirchner 12/18/2013 03:04AM
Re: Optimizer executes inperformant subquery first   117 Øystein Grøvlen 12/19/2013 02:45AM
Re: Optimizer executes inperformant subquery first   117 Martin Kirchner 12/20/2013 02:24AM
Re: Optimizer executes inperformant subquery first   115 Øystein Grøvlen 12/23/2013 08:07AM
Re: Optimizer executes inperformant subquery first   105 Rick James 12/23/2013 01:11PM
Re: Optimizer executes inperformant subquery first   109 Martin Kirchner 12/18/2013 05:16AM
Re: Optimizer executes inperformant subquery first   110 Rick James 12/18/2013 06:49PM
Re: Optimizer executes inperformant subquery first   114 Øystein Grøvlen 12/19/2013 02:49AM
my.cnf   358 Juan Medina 10/27/2013 02:08PM
Re: my.cnf   147 Rick James 10/29/2013 07:12PM
my.cnf optimization please help   448 Ivan Kratunkov 10/28/2013 03:39AM
Re: my.cnf optimization please help   189 Rick James 10/29/2013 07:10PM
MySQL Optimizer: Features in MySQL 5.7   280 Edwin Desouza 10/18/2013 09:33AM
I need help in optimzing a order by clause in a join query   330 George Maharis 10/08/2013 12:09PM
Re: I need help in optimzing a order by clause in a join query   148 Rick James 10/10/2013 09:34PM
Re: I need help in optimzing a order by clause in a join query   148 George Maharis 10/12/2013 02:07PM
Re: I need help in optimzing a order by clause in a join query   139 Rick James 10/16/2013 08:36PM
MySQL My.cnf Config Help   317 Mathieu Louis 10/03/2013 09:32PM
Very slow dependent subquery   403 patrick canarelli 09/18/2013 03:06AM
Re: Very slow dependent subquery   228 Øystein Grøvlen 09/18/2013 07:06AM
Re: Very slow dependent subquery   191 patrick canarelli 09/18/2013 07:51AM
Re: Very slow dependent subquery   178 Øystein Grøvlen 09/18/2013 02:57PM
Re: Very slow dependent subquery   192 Peter Brawley 09/18/2013 02:13PM
Re: Very slow dependent subquery   188 patrick canarelli 09/18/2013 03:10PM
Re: Very slow dependent subquery   185 Rick James 09/24/2013 10:04PM
Re: Very slow dependent subquery   231 patrick canarelli 09/25/2013 12:53AM
big database +1 million rows/days   435 khaoula el hammoumi 09/11/2013 04:06AM
Re: big database +1 million rows/days   209 khaoula el hammoumi 09/12/2013 01:37AM
Re: big database +1 million rows/days   206 Rick James 09/13/2013 10:59PM
Optimize query join with 25,000 records   434 Andrea Presazzi 08/26/2013 02:27AM
Re: Optimize query join with 25,000 records   203 Rick James 08/31/2013 04:19PM
Index not used for JOIN on compound key plus WHERE range filter   673 Chad B 08/15/2013 09:24AM
Re: Index not used for JOIN on compound key plus WHERE range filter   311 Chad B 08/15/2013 10:44AM
Re: Index not used for JOIN on compound key plus WHERE range filter   245 Rick James 08/31/2013 04:13PM
query index not used   374 Adrian Petre 08/15/2013 05:23AM
Re: query index not used   194 Rick James 08/31/2013 03:41PM
optimize request with order by and limit   566 yassine laouija 07/18/2013 05:26AM
Re: optimize request with order by and limit   265 Rick James 07/20/2013 10:25PM
Re: optimize request with order by and limit   239 yassine laouija 07/22/2013 09:46AM
Re: optimize request with order by and limit   208 Rick James 07/23/2013 08:58AM
Re: optimize request with order by and limit   215 yassine laouija 07/26/2013 04:07AM
Re: optimize request with order by and limit   229 Rick James 07/26/2013 11:53PM
Re: optimize request with order by and limit   231 yassine laouija 07/29/2013 04:40AM
Re: optimize request with order by and limit   226 Rick James 08/01/2013 10:39PM
providing a single line for multiple records from a table   431 raja chacham 07/23/2013 09:56AM
Re: providing a single line for multiple records from a table   219 Rick James 07/24/2013 09:08AM
Optimize Inner Join With WHERE BETWEEN dates   740 Anthony Galano 05/21/2013 07:32PM
Re: Optimize Inner Join With WHERE BETWEEN dates   348 Rick James 05/22/2013 06:41PM
Re: Optimize Inner Join With WHERE BETWEEN dates   365 Anthony Galano 05/24/2013 12:40PM
Re: Optimize Inner Join With WHERE BETWEEN dates   310 Rick James 05/25/2013 11:43AM
Re: Optimize Inner Join With WHERE BETWEEN dates   285 Anthony Galano 05/30/2013 05:30PM
Re: Optimize Inner Join With WHERE BETWEEN dates   282 Rick James 06/02/2013 01:15PM
Re: Optimize Inner Join With WHERE BETWEEN dates   282 Anthony Galano 06/03/2013 05:02PM
Re: Optimize Inner Join With WHERE BETWEEN dates   416 Rick James 06/04/2013 11:49PM
Query optimization   648 Jan Kowalski 05/10/2013 05:35AM
Re: Query optimization   282 Rick James 05/12/2013 08:42PM
Re: Query optimization   270 Jan Kowalski 05/15/2013 06:45AM
Re: Query optimization   289 Jan Kowalski 05/15/2013 08:35AM
Re: Query optimization   253 Rick James 05/16/2013 08:18AM
Re: Query optimization   292 Jan Kowalski 05/17/2013 03:52AM
Re: Query optimization   274 Rick James 05/17/2013 11:47PM
Re: Query optimization   269 Jan Kowalski 05/21/2013 08:51AM
Re: Query optimization   285 Jan Kowalski 05/22/2013 08:08AM
MySQL Optimizer: When is a Subquery Executed?   524 Edwin Desouza 05/02/2013 10:05AM
Index optimized left join with group by   925 Michal Kurgan 03/11/2013 05:41PM
Re: Index optimized left join with group by   396 Øystein Grøvlen 03/12/2013 04:16AM
Select last row that is less than or equal to a date   2,139 David Marcus 01/23/2013 06:35PM
Re: Select last row that is less than or equal to a date   613 Rick James 01/24/2013 10:27PM
Re: Select last row that is less than or equal to a date   571 David Marcus 01/26/2013 09:35AM
Re: Select last row that is less than or equal to a date   510 Rick James 01/27/2013 10:19AM
Re: Select last row that is less than or equal to a date   537 David Marcus 01/27/2013 12:00PM
Re: Select last row that is less than or equal to a date   435 Rick James 01/29/2013 12:51AM
Re: Select last row that is less than or equal to a date   451 David Marcus 01/29/2013 06:28PM
Re: Select last row that is less than or equal to a date   508 Øystein Grøvlen 01/30/2013 04:50AM
Re: Select last row that is less than or equal to a date   503 David Marcus 01/30/2013 05:50PM
Re: Select last row that is less than or equal to a date   444 Øystein Grøvlen 02/01/2013 06:03AM
Re: Select last row that is less than or equal to a date   476 David Marcus 02/02/2013 07:14AM
Re: Select last row that is less than or equal to a date   442 Øystein Grøvlen 02/02/2013 01:49PM
Re: Select last row that is less than or equal to a date   462 David Marcus 02/02/2013 02:25PM
Re: Select last row that is less than or equal to a date   422 Øystein Grøvlen 02/03/2013 05:58AM
Re: Select last row that is less than or equal to a date   452 David Marcus 02/03/2013 10:04AM
Re: Select last row that is less than or equal to a date   493 Rick James 02/03/2013 10:43AM
Re: Select last row that is less than or equal to a date   581 David Marcus 02/03/2013 12:33PM
Re: Select last row that is less than or equal to a date   478 Rick James 02/03/2013 02:59PM
Re: Select last row that is less than or equal to a date   536 David Marcus 02/03/2013 03:35PM
Re: Select last row that is less than or equal to a date   474 Rick James 02/03/2013 04:02PM
Re: Select last row that is less than or equal to a date   506 David Marcus 02/03/2013 04:15PM
Very slow query, help please   797 Jaume Roca 01/29/2013 10:18AM
Re: Very slow query, help please   489 Øystein Grøvlen 01/30/2013 05:12AM
Re: Very slow query, help please   473 Rick James 01/30/2013 08:38AM
Re: Very slow query, help please   498 Jaume Roca 01/30/2013 09:05AM
MySQL 5.6: IN Subqueries Are Optimized away   712 Edwin Desouza 01/29/2013 01:08PM
CPU load very very high !!!!, Please assist !!   2,892 Sayed Ali 01/22/2013 06:49AM
Re: CPU load very very high !!!!, Please assist !!   1,102 Rick James 01/22/2013 11:32PM
New EXPLAIN Features in MySQL 5.6 – FORMAT=JSON actually adds more information!   803 Edwin Desouza 01/22/2013 05:58PM
Can we expect an enhancement for derived table merge optimization?   1,272 Michael Hogue 01/04/2013 12:04PM
Re: Can we expect an enhancement for derived table merge optimization?   474 Rick James 01/07/2013 10:50PM
Re: Can we expect an enhancement for derived table merge optimization?   633 Roy Lyseng 01/11/2013 09:18AM
Re: Can we expect an enhancement for derived table merge optimization?   481 Rick James 01/13/2013 12:24PM
Re: Can we expect an enhancement for derived table merge optimization?   495 Roy Lyseng 01/14/2013 08:43AM
Re: Can we expect an enhancement for derived table merge optimization?   442 Rick James 01/14/2013 09:54AM
Re: Can we expect an enhancement for derived table merge optimization?   462 Roy Lyseng 01/15/2013 06:15AM
Re: Can we expect an enhancement for derived table merge optimization?   426 Roy Lyseng 01/11/2013 08:51AM
How to best optimize MYSQL Database   1,117 Muhammad Usman 12/10/2012 03:45AM
Re: How to best optimize MYSQL Database   502 Rick James 12/21/2012 12:49PM
mysql subquery query optimization question   1,050 Yong Yim 01/12/2013 09:24AM
Re: mysql subquery query optimization question   470 Rick James 01/13/2013 11:30AM
Create a New Datatype   957 Andy Gurzynski 01/06/2013 01:00AM
Re: Create a New Datatype   434 Rick James 01/07/2013 11:01PM
MySQL Optimizer: InnoDB extended secondary keys   990 Edwin Desouza 12/21/2012 12:12PM
Optimizer for innodb does not reduce "data_free"   1,512 Sebastian Schött 12/06/2012 03:39AM
Re: Optimizer for innodb does not reduce "data_free"   644 Rick James 12/08/2012 01:33PM
Complex query - need advise   1,144 chris boer 11/03/2012 04:16PM
Re: Complex query - need advise   552 chris boer 11/03/2012 04:24PM
Re: Complex query - need advise   542 chris boer 11/04/2012 10:05AM
Re: Complex query - need advise   802 Rick James 11/05/2012 11:12AM
Follow up on "Query Execution Plan"   1,082 Chris Slominski 10/24/2012 11:59AM
Re: Follow up on "Query Execution Plan"   561 Chris Slominski 10/25/2012 11:14AM
Re: Follow up on "Query Execution Plan"   500 Chris Slominski 10/25/2012 06:15AM
JOIN query too slow   1,167 N. Kovac 10/13/2012 11:52AM
Re: JOIN query too slow   519 Peter Brawley 10/14/2012 10:26AM
Re: JOIN query too slow   514 Rick James 10/16/2012 07:48PM
bulk update very slow   2,568 james che 09/25/2012 02:51PM
Re: bulk update very slow   920 james che 09/26/2012 02:58PM
Re: bulk update very slow   828 Rick James 09/27/2012 08:19PM
Re: bulk update very slow   948 Jørgen Løland 09/27/2012 12:01PM
Why Query Cache Actived Returns Wrong Results?   1,134 Daniel Estrada 09/22/2012 08:57PM
Re: Why Query Cache Actived Returns Wrong Results?   626 Rick James 09/23/2012 03:46PM
Re: Why Query Cache Actived Returns Wrong Results?   656 Daniel Estrada 09/23/2012 08:24PM
Re: Why Query Cache Actived Returns Wrong Results?   541 Rick James 09/24/2012 11:43PM
Join? Union? I am so lost.   1,074 Hank Reardon 09/17/2012 09:09AM
Re: Join? Union? I am so lost.   507 Rick James 09/18/2012 07:48AM
How make indexes work with group by statement   1,068 Adnan Raza 09/13/2012 12:48AM
Re: How make indexes work with group by statement   544 Rick James 09/15/2012 10:34PM
Re: How make indexes work with group by statement   562 Jørgen Løland 09/13/2012 01:50AM
Query Optimizer Problem - OrderBy - 5.0.51 to 5.5.27   1,203 Dominik Bieringer 09/05/2012 02:57AM
Re: Query Optimizer Problem - OrderBy - 5.0.51 to 5.5.27   555 Rick James 09/06/2012 10:42PM
Re: Query Optimizer Problem - OrderBy - 5.0.51 to 5.5.27   571 Øystein Grøvlen 09/06/2012 04:32AM
optimize the query   1,129 ch srinivas 08/27/2012 10:47PM
Re: optimize the query   534 Øystein Grøvlen 08/28/2012 01:43AM
Re: optimize the query   537 ch srinivas 08/29/2012 04:15AM
Re: optimize the query   544 Øystein Grøvlen 08/29/2012 04:39AM
Re: optimize the query   488 ch srinivas 08/29/2012 05:38AM
Re: optimize the query   516 Rick James 08/30/2012 07:20AM
Query with GROUP BY not using Index   1,208 Imran Akbar 08/14/2012 01:06PM
Re: Query with GROUP BY not using Index   620 Øystein Grøvlen 08/15/2012 02:46AM
Re: Query with GROUP BY not using Index   539 Imran Akbar 08/16/2012 10:30AM
Re: Query with GROUP BY not using Index   570 Øystein Grøvlen 08/17/2012 02:58AM
Re: Query with GROUP BY not using Index   565 Rick James 08/18/2012 10:30PM
Re: Query with GROUP BY not using Index   567 Imran Akbar 08/24/2012 12:41PM
Re: Query with GROUP BY not using Index   575 Øystein Grøvlen 08/28/2012 03:11AM
Re: Query with GROUP BY not using Index   583 Imran Akbar 08/28/2012 06:21PM
Re: Query with GROUP BY not using Index   609 Øystein Grøvlen 08/29/2012 01:28AM
Re: Query with GROUP BY not using Index   556 Imran Akbar 08/29/2012 10:36AM
CONCAT and Index in where clause   2,972 Aurelien PANIZZA 08/22/2012 08:45AM
Re: CONCAT and Index in where clause   1,234 Øystein Grøvlen 08/23/2012 01:15AM
Re: CONCAT and Index in where clause   1,063 Rick James 08/23/2012 09:13PM
Re: CONCAT and Index in where clause   1,079 Aurelien PANIZZA 08/27/2012 09:53AM
Re: CONCAT and Index in where clause   1,231 Øystein Grøvlen 08/28/2012 02:50AM
Simple query spending too much time in 'statistics' state without reason   3,477 Vincent B. 08/21/2012 06:19AM
Re: Simple query spending too much time in 'statistics' state without reason   1,962 Jørgen Løland 08/24/2012 06:24AM
Re: Simple query spending too much time in 'statistics' state without reason   1,518 Vincent B. 08/28/2012 01:53AM
Re: Simple query spending too much time in 'statistics' state without reason   1,774 Rick James 08/22/2012 07:44PM
Order By Slows down Joins   1,333 Sami BH 08/22/2012 09:12AM
Re: Order By Slows down Joins   496 Rick James 08/23/2012 08:56PM
always uses filesort even after adding indexes   1,124 Pranav Gore 08/22/2012 02:49AM
Re: always uses filesort even after adding indexes   554 Rick James 08/22/2012 10:52PM
STRAIGHT_JOIN for OUTER JOINGS   1,251 Paul Tsui 08/19/2012 08:28PM
Re: STRAIGHT_JOIN for OUTER JOINGS   674 Øystein Grøvlen 08/20/2012 05:16AM
CPU usage 99% - and query very slow - help   1,910 irox ferenc 08/03/2012 10:49AM
Re: CPU usage 99% - and query very slow - help   918 Rick James 08/04/2012 01:36PM
Re: CPU usage 99% - and query very slow - help   1,141 robert eeeeee 08/06/2012 01:04PM
Re: CPU usage 99% - and query very slow - help   820 Øystein Grøvlen 08/15/2012 03:09AM
Pages:  1 2 3 4 5 ...Last Next
Current Page: 1 of 16

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.