MySQL Forums
Forum List  »  Optimizer & Parser
Announcements Last Post
•   Announcing April 2026 Releases featuring MySQL Server 9.7.0, 8.4.9 and 8.0.46 04/27/2026 03:22AM

Advanced Search
New Topic
Pages:
« 1 2 3 4 5
...
19 »

Subject
Views
Written By
Posted
MySQL 8.0.1: [Recursive] Common Table Expressions in MySQL (CTEs), Part Four – depth-first or breadth-first traversal, transitive closure, cycle avoidance  
1,599
Edwin Desouza
05/23/2017 11:01AM
MySQL Index Advisor for SQL Tuning  
5,458
Chaitanya Challa
05/10/2017 09:12PM
Re: MySQL Index Advisor for SQL Tuning  
3,264
Edwin Desouza
05/10/2017 10:57PM
Re: MySQL Index Advisor for SQL Tuning  
1,888
Chaitanya Challa
05/11/2017 08:08AM
MySQL 8.0: CTEs Recursive Query Throwdown  
1,879
Edwin Desouza
05/05/2017 06:14PM
MySQL 8.0: GROUPING function  
1,080
Edwin Desouza
05/02/2017 10:37AM
How to Analyze and Tune MySQL Queries for Better Performance  
1,041
Edwin Desouza
04/27/2017 11:32AM
MySQL 8.0: Optimizer: What's New  
1,206
Edwin Desouza
04/27/2017 11:31AM
MySQL 8.0 Optimizer Guide  
1,331
Edwin Desouza
04/27/2017 11:30AM
MySQL 8.0.1: Using SKIP LOCKED and NOWAIT to handle hot rows  
1,387
Edwin Desouza
04/12/2017 11:57AM
MySQL 8.0: Improved performance with CTE  
1,230
Edwin Desouza
04/12/2017 11:57AM
MySQL 5.7: What to Do When the Optimizer Overestimates the Condition Filtering Effect  
1,137
Edwin Desouza
03/24/2017 11:30AM
prepare don't work for optimize statement  
1,366
Long WU
03/22/2017 12:30AM
Re: prepare don't work for optimize statement  
765
Øystein Grøvlen
03/22/2017 01:34AM
MySQL 5.7: Improved JOIN Order by Taking Condition Filter Effect into Account  
1,379
Edwin Desouza
03/17/2017 02:49PM
Improve search when using IN() ORDER BY PRIMARY and LIMIT  
1,812
jon sans
02/11/2017 07:17AM
Re: Improve search when using IN() ORDER BY PRIMARY and LIMIT  
661
jon sans
02/11/2017 07:29AM
Re: Improve search when using IN() ORDER BY PRIMARY and LIMIT  
824
Øystein Grøvlen
02/13/2017 05:58AM
MySQL Performance Tuning: Optimizer Hints  
1,194
Edwin Desouza
02/04/2017 09:09PM
Hiw to fast delete rows from table in relation?  
1,500
Andrzej Borucki
01/22/2017 02:21AM
Re: Hiw to fast delete rows from table in relation?  
847
Andrzej Borucki
01/22/2017 03:39AM
Re: Hiw to fast delete rows from table in relation?  
781
Andrzej Borucki
01/22/2017 04:03AM
Query not always using indexes  
3,174
K DBA
01/06/2017 05:48AM
Re: Query not always using indexes  
1,101
Peter Brawley
01/06/2017 12:28PM
Re: Query not always using indexes  
1,173
K DBA
01/09/2017 05:18AM
Re: Query not always using indexes  
1,017
Øystein Grøvlen
01/09/2017 02:30AM
Optimize subquery, replace IN() with JOIN  
3,128
Miron jajtic
11/15/2016 02:37PM
Re: Optimize subquery, replace IN() with JOIN  
1,140
Peter Brawley
11/15/2016 03:34PM
Re: Optimize subquery, replace IN() with JOIN  
1,421
Miron jajtic
11/15/2016 04:25PM
Re: Optimize subquery, replace IN() with JOIN  
1,127
Rick James
11/17/2016 08:11PM
Re: Optimize subquery, replace IN() with JOIN  
1,088
Peter Brawley
11/22/2016 02:44PM
Re: Optimize subquery, replace IN() with JOIN  
1,155
Miron jajtic
11/16/2016 04:03AM
Re: Optimize subquery, replace IN() with JOIN  
1,151
Peter Brawley
11/16/2016 12:51PM
Re: Optimize subquery, replace IN() with JOIN  
1,331
Miron jajtic
11/16/2016 03:22PM
Re: Optimize subquery, replace IN() with JOIN  
1,114
Peter Brawley
11/16/2016 04:44PM
Re: Optimize subquery, replace IN() with JOIN  
944
sahar gull
12/27/2016 05:32AM
Re: Optimize subquery, replace IN() with JOIN  
1,022
Øystein Grøvlen
11/16/2016 01:50AM
Re: Optimize subquery, replace IN() with JOIN  
1,101
Miron jajtic
11/16/2016 04:01AM
Re: Optimize subquery, replace IN() with JOIN  
1,360
Øystein Grøvlen
11/16/2016 06:23AM
Improved Query Performance by Using Derived Table instead of IN-subquery  
1,257
Edwin Desouza
12/23/2016 08:50AM
primary key vs covered index  
1,833
marcin kot
11/30/2016 09:55AM
Re: primary key vs covered index  
982
Øystein Grøvlen
12/01/2016 01:39AM
Re: primary key vs covered index  
955
marcin kot
12/01/2016 03:38AM
Re: primary key vs covered index  
965
Øystein Grøvlen
12/01/2016 03:57AM
Re: primary key vs covered index  
896
marcin kot
12/01/2016 04:16AM
Re: primary key vs covered index  
859
Øystein Grøvlen
12/01/2016 04:25AM
MySQL 8.0: Refactoring and Improving the Parser  
1,340
Edwin Desouza
11/22/2016 10:58AM
MySQL subquery  
1,655
harry sheng
10/27/2016 02:51PM
Re: MySQL subquery  
965
Øystein Grøvlen
10/28/2016 01:03AM
Re: MySQL subquery  
928
harry sheng
11/06/2016 08:50PM
Re: MySQL subquery  
984
Øystein Grøvlen
11/07/2016 01:39AM
How to Analyze and Tune MySQL Queries for Better Performance  
1,426
Edwin Desouza
10/21/2016 09:58AM
Index on timestamp  
8,523
Adeline M
10/14/2016 08:47AM
Re: Index on timestamp  
3,444
Rick James
10/16/2016 04:40PM
MySQL 8.0: Descending Indexes  
1,602
Edwin Desouza
10/12/2016 10:00AM
Pivot table with dynamic columns  
7,725
Aram Mirzadeh
09/30/2016 06:03PM
Re: Pivot table with dynamic columns  
2,841
Rick James
10/03/2016 03:40PM
inner join vs left join - huge performance difference  
13,658
michael cook
07/06/2016 09:32AM
Re: inner join vs left join - huge performance difference  
3,369
Peter Brawley
07/06/2016 12:00PM
Re: inner join vs left join - huge performance difference  
2,350
michael cook
07/06/2016 12:18PM
Re: inner join vs left join - huge performance difference  
1,932
michael cook
07/06/2016 12:29PM
Re: inner join vs left join - huge performance difference  
1,675
Peter Brawley
07/06/2016 12:36PM
Re: inner join vs left join - huge performance difference  
1,825
michael cook
07/06/2016 12:44PM
Re: inner join vs left join - huge performance difference  
1,744
michael cook
07/06/2016 01:51PM
Re: inner join vs left join - huge performance difference  
1,756
Peter Brawley
07/06/2016 02:32PM
Re: inner join vs left join - huge performance difference  
1,487
michael cook
07/06/2016 02:41PM
Re: inner join vs left join - huge performance difference  
1,540
Rick James
07/08/2016 11:58PM
Re: inner join vs left join - huge performance difference  
1,653
Peter Brawley
07/09/2016 09:54AM
Re: inner join vs left join - huge performance difference  
1,883
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  
1,978
Edwin Desouza
09/20/2016 09:21AM
Preparse Query Rewrite Plugin DLL  
2,683
Francois Haddad
08/12/2016 05:16PM
Re: Preparse Query Rewrite Plugin DLL  
1,021
Georgi Kodinov
09/08/2016 02:23AM
Re: Preparse Query Rewrite Plugin DLL  
1,460
Francois Haddad
09/14/2016 07:04PM
Re: Preparse Query Rewrite Plugin DLL  
1,085
Tor Didriksen
09/15/2016 01:40AM
Re: Preparse Query Rewrite Plugin DLL  
1,274
Francois Haddad
09/15/2016 11:34AM
Preparse Query Rewrite Plugin DLL  
2,206
Francois Haddad
06/03/2016 12:41PM
Re: Preparse Query Rewrite Plugin DLL  
913
Francois Haddad
06/03/2016 03:13PM
Re: Preparse Query Rewrite Plugin DLL  
883
Georgi Kodinov
06/28/2016 02:12AM
Re: Preparse Query Rewrite Plugin DLL  
870
Francois Haddad
08/12/2016 05:13PM
why the two query has a different execute plan?  
3,685
h h
08/22/2016 02:55AM
Re: why the two query has a different execute plan?  
912
Øystein Grøvlen
08/22/2016 05:08AM
Re: why the two query has a different execute plan?  
880
Rick James
08/26/2016 02:29PM
This topic has been moved.:  Preparse Query Rewrite Plugin DLL  
910
Francois Haddad
08/15/2016 09:28AM
how to optimize this sql?  
1,726
h h
07/07/2016 07:38PM
Re: how to optimize this sql?  
1,201
Peter Brawley
07/08/2016 10:59AM
Re: how to optimize this sql?  
1,223
h h
07/12/2016 09:01PM
Re: how to optimize this sql?  
1,116
Rick James
07/09/2016 11:04PM
Re: how to optimize this sql?  
1,041
h h
07/12/2016 09:08PM
Re: how to optimize this sql?  
1,013
Rick James
07/14/2016 12:52PM
Indexing for date column for range query  
1,554
duc minh
07/05/2016 11:04PM
Re: Indexing for date column for range query  
896
Rick James
07/09/2016 10:47PM
Help with partially unique index  
2,021
El T
06/22/2016 04:44AM
Re: Help with partially unique index  
1,041
Rick James
06/25/2016 10:45PM
Re: Help with partially unique index  
1,109
El T
07/02/2016 03:33PM
Re: Help with partially unique index  
907
Rick James
07/04/2016 12:50PM
Explain plans for InnoDB and Memory Engines  
1,811
Jagan Kumar
05/02/2016 03:15PM
Re: Explain plans for InnoDB and Memory Engines  
878
Peter Brawley
05/02/2016 09:23PM
Re: Explain plans for InnoDB and Memory Engines  
1,046
Øystein Grøvlen
05/04/2016 05:17AM
Re: Explain plans for InnoDB and Memory Engines  
963
Rick James
05/05/2016 10:18PM
MySQL Query Rewrite Plugins  
1,519
Edwin Desouza
02/02/2016 09:48PM
why left join can not use unique index?  
2,878
h h
12/07/2015 08:30PM
Re: why left join can not use unique index?  
1,196
Rick James
12/08/2015 08:46PM
Re: why left join can not use unique index?  
1,072
h h
12/11/2015 03:20AM
Re: why left join can not use unique index?  
1,163
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  
1,761
Michael W.
11/16/2015 11:14AM
Re: prepared statement query takes 3s for a few hundred lines - query issue  
1,075
Rick James
11/30/2015 08:09PM
Re: prepared statement query takes 3s for a few hundred lines - query issue  
1,162
Michael W.
12/01/2015 07:10AM
Re: prepared statement query takes 3s for a few hundred lines - query issue  
1,218
Rick James
12/07/2015 01:17AM
Why not use index  
2,249
zhang peng
11/08/2015 11:14PM
Re: Why not use index  
1,037
Peter Brawley
11/09/2015 11:42AM
Re: Why not use index  
1,069
zhang peng
11/11/2015 12:17AM
Re: Why not use index  
1,150
Øystein Grøvlen
11/10/2015 10:35AM
Re: Why not use index  
1,239
zhang peng
11/11/2015 12:15AM
Re: Why not use index  
1,161
Øystein Grøvlen
11/11/2015 03:40AM
Re: Why not use index  
1,415
zhang peng
11/11/2015 07:29PM
Re: Why not use index  
991
Peter Brawley
11/11/2015 11:00PM
Re: Why not use index  
1,157
Øystein Grøvlen
11/12/2015 01:48AM
Re: Why not use index  
1,102
zhang peng
11/16/2015 12:17AM
Google Update Optimizer system  
2,013
Anik Bhowmik
11/09/2015 09:35PM
Re: Google Update Optimizer system  
1,216
Peter Brawley
11/09/2015 10:12PM
Re: Google Update Optimizer system  
980
Jonathan Stephens
11/10/2015 01:02AM
Normalize dump table  
3,006
Jose Valle
10/11/2015 08:37PM
Re: Normalize dump table  
1,043
Jose Valle
10/11/2015 08:42PM
Re: Normalize dump table  
1,302
Antonio Valle
10/13/2015 01:41PM
Re: Normalize dump table  
1,196
Rick James
10/17/2015 07:15PM
optimize query for index using between and group by  
2,888
Raghavendra raghu
08/28/2015 03:21AM
Re: optimize query for index using between and group by  
1,653
Rick James
08/29/2015 09:56AM
Re: optimize query for index using between and group by  
1,155
Raghavendra raghu
08/31/2015 02:34AM
Parsing in MySQL Workbench: the ANTLR age  
2,092
Edwin Desouza
08/14/2015 10:16AM
MySQL Optimizer: Hints  
2,072
Edwin Desouza
07/29/2015 10:07AM
Index not working for date field used in between query  
5,831
Shrinivasa rao
07/22/2015 11:48PM
Re: Index not working for date field used in between query  
2,360
Rick James
07/26/2015 08:28AM
MyISAM using 'wrong' index  
2,234
Danny Stommen
06/08/2015 04:14AM
Re: MyISAM using 'wrong' index  
1,254
Rick James
06/09/2015 11:53PM
Re: MyISAM using 'wrong' index  
1,807
Danny Stommen
06/30/2015 03:22AM
Re: MyISAM using 'wrong' index  
1,446
Rick James
07/02/2015 09:28PM
Re: MyISAM using 'wrong' index  
1,312
Danny Stommen
07/03/2015 03:16AM
Re: MyISAM using 'wrong' index  
1,466
Rick James
07/04/2015 11:10AM
Re: MyISAM using 'wrong' index  
1,393
Danny Stommen
07/07/2015 01:56AM
Re: MyISAM using 'wrong' index  
1,177
Edwin Desouza
07/07/2015 09:10AM
Need help understanding optimizer behavior in 5.6  
2,886
Aaron Craven
06/22/2015 08:30AM
Re: Need help understanding optimizer behavior in 5.6  
1,319
Aaron Craven
06/22/2015 08:31AM
Re: Need help understanding optimizer behavior in 5.6  
1,299
Rick James
06/23/2015 07:00PM
Re: Need help understanding optimizer behavior in 5.6  
1,301
Aaron Craven
06/24/2015 06:22AM
Re: Need help understanding optimizer behavior in 5.6  
1,316
Rick James
06/25/2015 11:37PM
Re: Need help understanding optimizer behavior in 5.6  
1,324
Aaron Craven
06/26/2015 06:56AM
Re: Need help understanding optimizer behavior in 5.6  
1,302
Øystein Grøvlen
06/30/2015 05:46AM
Re: Need help understanding optimizer behavior in 5.6  
1,875
Aaron Craven
06/30/2015 08:06AM
Re: Need help understanding optimizer behavior in 5.6  
1,251
Aaron Craven
06/30/2015 08:16AM
Re: Need help understanding optimizer behavior in 5.6  
1,641
Øystein Grøvlen
07/01/2015 03:49AM
Re: Need help understanding optimizer behavior in 5.6  
1,456
Aaron Craven
07/01/2015 06:48AM
Re: Need help understanding optimizer behavior in 5.6  
1,301
Edwin Desouza
07/01/2015 03:05PM
Re: Need help understanding optimizer behavior in 5.6  
1,345
Aaron Craven
07/02/2015 07:48AM
MySQL 5.7: Optimizer Trace and EXPLAIN FORMAT=JSON  
2,553
Edwin Desouza
05/25/2015 10:41AM
This topic has been moved.:  Improve search when using IN() ORDER BY PRIMARY and LIMIT  
0
jon sans
02/11/2017 01:36PM
Pages:
« 1 2 3 4 5
...
19 »

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.