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Posted
Optimizer being overly aggressive  
2,486
Adrian Cornish
07/06/2012 08:18PM
Re: Optimizer being overly aggressive  
1,281
Rick James
07/10/2012 12:49PM
Re: Optimizer being overly aggressive  
1,264
Adrian Cornish
07/10/2012 08:54PM
multiple-column index and order by  
2,753
Raphael Hoffmann
07/06/2012 05:59PM
Re: multiple-column index and order by  
1,312
Rick James
07/10/2012 12:55PM
From Months to Seconds with Subquery Materialization  
1,938
Edwin DeSouza
07/09/2012 11:15AM
performing mysqldump corrected query issue?  
2,293
Peter Sylvester
06/26/2012 01:12PM
Re: performing mysqldump corrected query issue?  
1,282
Rick James
07/01/2012 06:43PM
Re: performing mysqldump corrected query issue?  
1,080
Peter Sylvester
06/26/2012 02:08PM
difference between READ and SCAN  
2,017
Linhai Song
06/20/2012 04:05PM
Re: difference between READ and SCAN  
1,043
Rick James
06/20/2012 08:23PM
Re: difference between READ and SCAN  
1,360
Linhai Song
06/21/2012 12:19PM
to optimize a self join request  
1,909
Oracleuser user
06/14/2012 08:23AM
Re: to optimize a self join request  
1,298
Rick James
06/15/2012 08:19AM
Call out for FULL JOIN - bug #18003  
2,074
ted strauss
06/14/2012 10:23AM
Re: Call out for FULL JOIN - bug #18003  
950
ted strauss
06/14/2012 12:13PM
index cannot be used when passing 'int' to 'varchar'  
2,668
liao zhifeng
06/10/2012 11:16PM
Re: index cannot be used when passing 'int' to 'varchar'  
1,124
Rick James
06/11/2012 11:27PM
Re: index cannot be used when passing 'int' to 'varchar'  
1,160
liao zhifeng
06/12/2012 12:48AM
Re: index cannot be used when passing 'int' to 'varchar'  
1,185
Rick James
06/12/2012 09:23PM
Re: index cannot be used when passing 'int' to 'varchar'  
1,323
liao zhifeng
06/12/2012 11:16PM
Re: index cannot be used when passing 'int' to 'varchar'  
1,148
Rick James
06/13/2012 07:15PM
Re: index cannot be used when passing 'int' to 'varchar'  
1,113
liao zhifeng
06/13/2012 10:35PM
Table does not support optimize...  
3,137
Piotr Ch
06/02/2012 12:58AM
Querying a fast subquery never returns  
1,951
Eric Coll
05/22/2012 05:15PM
Re: Querying a fast subquery never returns  
1,097
Eric Coll
05/22/2012 05:19PM
Re: Querying a fast subquery never returns  
1,359
Rick James
05/24/2012 12:40AM
Re: Querying a fast subquery never returns  
1,321
Eric Coll
05/25/2012 11:15AM
Re: Querying a fast subquery never returns  
1,169
Rick James
05/26/2012 10:59AM
table index optimization  
2,237
Matus Zeman
05/01/2012 10:55AM
Re: table index optimization  
1,085
Rick James
05/02/2012 07:08PM
Re: table index optimization  
1,266
Rick James
05/05/2012 09:07AM
Re: table index optimization  
1,106
Matus Zeman
05/17/2012 09:25AM
Re: table index optimization  
1,380
Matus Zeman
05/04/2012 08:20AM
Query execution plan  
2,734
Chris Slominski
05/08/2012 12:38PM
Re: Query execution plan  
1,191
Rick James
05/09/2012 09:35PM
Re: Query execution plan  
1,319
Chris Slominski
05/10/2012 08:29AM
Re: Query execution plan  
1,282
Rick James
05/11/2012 07:16PM
Re: Query execution plan  
1,356
Chris Slominski
05/14/2012 05:27AM
Re: Query execution plan  
1,105
Rick James
05/15/2012 07:22PM
Re: Query execution plan  
1,121
Chris Slominski
05/09/2012 11:08AM
limit & scala subquery  
2,119
jongse park
05/08/2012 10:33PM
Re: limit & scala subquery  
1,022
Rick James
05/09/2012 09:21PM
Mysql slow upadte  
1,639
krishna krishna
04/30/2012 06:09AM
1000 Columns, 1000 Tables, or what?  
2,719
Fernando Oliveira
04/19/2012 08:09AM
Re: 1000 Columns, 1000 Tables, or what?  
1,336
Rick James
04/20/2012 06:50PM
Re: 1000 Columns, 1000 Tables, or what?  
1,116
Fernando Oliveira
04/23/2012 08:10AM
Re: 1000 Columns, 1000 Tables, or what?  
1,371
Rick James
04/26/2012 07:59AM
Help with query/tables optimization  
2,018
Oleg Ivanov
04/14/2012 05:20AM
Re: Help with query/tables optimization  
1,221
Rick James
04/16/2012 12:05AM
Re: Help with query/tables optimization  
1,286
Oleg Ivanov
04/16/2012 11:53AM
Re: Help with query/tables optimization  
1,601
Oleg Ivanov
04/16/2012 12:04PM
Identical servers different plan for the same query  
2,861
Eric Coll
04/07/2012 01:20AM
Re: Identical servers different plan for the same query  
1,229
Eric Coll
04/10/2012 03:28PM
Re: Identical servers different plan for the same query  
1,271
Rick James
04/10/2012 10:29PM
Re: Identical servers different plan for the same query  
1,172
Eric Coll
04/11/2012 10:05AM
Re: Identical servers different plan for the same query  
1,291
Rick James
04/12/2012 08:56AM
Re: Identical servers different plan for the same query  
1,188
Eric Coll
04/12/2012 03:23PM
Re: Identical servers different plan for the same query  
2,385
Rick James
04/13/2012 03:49PM
Re: Identical servers different plan for the same query  
1,257
Eric Coll
04/07/2012 09:55AM
Re: Identical servers different plan for the same query  
1,252
irek kordirko
04/07/2012 02:54PM
Re: Identical servers different plan for the same query  
1,490
Rick James
04/08/2012 12:20PM
Re: Identical servers different plan for the same query  
1,600
Eric Coll
04/09/2012 10:24AM
Re: Identical servers different plan for the same query  
1,245
Eric Coll
04/09/2012 10:35AM
Re: Identical servers different plan for the same query  
1,214
Eric Coll
04/09/2012 10:37AM
Re: Identical servers different plan for the same query  
1,272
Eric Coll
04/09/2012 10:42AM
MySQL Optimizer: Improved DBT-3 Results with MySQL 5.6.5  
1,670
Edwin DeSouza
04/10/2012 05:31PM
MySQL Optimizer: Improvements for many-table joins  
1,673
Edwin DeSouza
04/10/2012 02:54PM
MySQL Optimizer Team Blog  
1,983
Edwin DeSouza
04/10/2012 01:58PM
MySQL Optimizer: Index Condition Pushdown to the rescue!  
1,770
Edwin DeSouza
04/10/2012 01:56PM
MySQL Optimizer: Semi-join in MySQL 5.6  
1,385
Edwin DeSouza
04/10/2012 01:56PM
MySQL Optimizer: On queries with many values in the IN clause  
1,627
Edwin DeSouza
04/10/2012 01:55PM
MySQL Optimizer: Faster subqueries with materialization  
1,437
Edwin DeSouza
04/10/2012 01:54PM
MySQL Optimizer: Structured EXPLAIN (JSON)  
1,860
Edwin DeSouza
04/10/2012 01:54PM
LEFT JOIN WHERE GROUP BY  
2,632
Daniel Flöijer
04/02/2012 02:51AM
Re: LEFT JOIN WHERE GROUP BY  
1,377
Rick James
04/05/2012 08:01PM
Re: LEFT JOIN WHERE GROUP BY  
1,103
irek kordirko
04/02/2012 12:04PM
Re: LEFT JOIN WHERE GROUP BY  
1,145
Daniel Flöijer
04/02/2012 01:24PM
Re: LEFT JOIN WHERE GROUP BY  
1,183
irek kordirko
04/02/2012 04:29PM
Re: LEFT JOIN WHERE GROUP BY  
1,814
Daniel Flöijer
04/03/2012 12:50AM
Re: LEFT JOIN WHERE GROUP BY  
1,153
irek kordirko
04/03/2012 05:40PM
Re: LEFT JOIN WHERE GROUP BY  
1,278
Daniel Flöijer
04/03/2012 11:22PM
Re: LEFT JOIN WHERE GROUP BY  
1,121
irek kordirko
04/04/2012 05:12PM
Re: LEFT JOIN WHERE GROUP BY  
908
Daniel Flöijer
04/04/2012 11:10PM
Explain the order of query  
2,095
jongse park
03/19/2012 01:49AM
Re: Explain the order of query  
1,115
Rick James
03/19/2012 10:38PM
Re: Explain the order of query  
1,117
jongse park
03/21/2012 07:06PM
Re: Explain the order of query  
1,419
Jørgen Løland
03/28/2012 05:06AM
Re: Explain the order of query  
895
Rick James
03/22/2012 06:01PM
Re: Explain the order of query  
919
jongse park
03/22/2012 08:13PM
Re: Explain the order of query  
919
Rick James
03/23/2012 07:57PM
Queries using JOIN and ORDER BY LIMIT  
17,495
Nikita Dubrovsky
03/10/2012 01:11PM
Re: Queries using JOIN and ORDER BY LIMIT  
2,455
irek kordirko
03/12/2012 06:18PM
Re: Queries using JOIN and ORDER BY LIMIT  
2,337
Rick James
03/13/2012 11:07PM
Re: Queries using JOIN and ORDER BY LIMIT  
1,813
Nikita Dubrovsky
03/14/2012 08:45AM
Re: Queries using JOIN and ORDER BY LIMIT  
2,173
Rick James
03/15/2012 10:50AM
Obfuscate Functions and Procedures  
1,954
Tremal Naik
03/12/2012 05:00AM
Re: Obfuscate Functions and Procedures  
1,369
Rick James
03/13/2012 10:46PM
Group by not using index  
2,220
Matthew Moles
03/02/2012 10:06AM
Re: Group by not using index  
1,128
Rick James
03/04/2012 10:59PM
Re: Group by not using index  
1,070
Matthew Moles
03/05/2012 03:57AM
Re: Group by not using index  
988
irek kordirko
03/03/2012 05:22PM
Optimizing query  
1,886
Marko Kupusic
02/24/2012 06:07AM
Re: Optimizing query  
1,033
Rick James
02/25/2012 05:54PM
Re: Optimizing query  
941
Marko Kupusic
02/27/2012 06:04AM
Re: Optimizing query  
1,022
Rick James
02/28/2012 07:57PM
Re: Optimizing query  
955
Ole John Aske
02/25/2012 03:49AM
Re: Optimizing query  
1,258
Marko Kupusic
02/27/2012 05:57AM
Re: Optimizing query  
1,067
Scott Nemes
02/24/2012 01:16PM
how to optimise query for 10+ millions records  
2,544
Azhar Rahi
02/09/2012 03:30AM
Re: how to optimise query for 10+ millions records  
1,543
irek kordirko
02/09/2012 05:31AM
Re: how to optimise query for 10+ millions records  
1,214
Azhar Rahi
02/09/2012 05:38AM
Re: how to optimise query for 10+ millions records  
1,095
irek kordirko
02/09/2012 05:58PM
Re: how to optimise query for 10+ millions records  
1,100
Rick James
02/11/2012 11:26PM
Re: how to optimise query for 10+ millions records  
1,314
Azhar Rahi
02/12/2012 10:12PM
Re: how to optimise query for 10+ millions records  
1,195
irek kordirko
02/13/2012 02:18PM
Re: how to optimise query for 10+ millions records  
1,367
Azhar Rahi
02/14/2012 02:33AM
Re: how to optimise query for 10+ millions records  
1,120
irek kordirko
02/14/2012 07:24AM
Re: how to optimise query for 10+ millions records  
1,230
Rick James
02/15/2012 07:30AM
Re: how to optimise query for 10+ millions records  
1,624
Azhar Rahi
02/16/2012 03:54AM
Re: how to optimise query for 10+ millions records  
1,132
Rick James
02/17/2012 01:20AM
Re: how to optimise query for 10+ millions records  
957
Azhar Rahi
02/17/2012 03:57PM
Re: how to optimise query for 10+ millions records  
1,324
irek kordirko
02/17/2012 05:12PM
Re: how to optimise query for 10+ millions records  
1,121
Azhar Rahi
02/20/2012 02:21AM
Re: how to optimise query for 10+ millions records  
1,158
Rick James
02/18/2012 07:18AM
Re: how to optimise query for 10+ millions records  
1,177
Azhar Rahi
02/21/2012 03:25AM
Re: how to optimise query for 10+ millions records  
1,207
Rick James
02/24/2012 10:45AM
Join  
1,951
johne doe
02/01/2012 06:51AM
Re: Join Query Performance Problme  
1,032
Rick James
02/03/2012 10:18AM
Re: Join Query Performance Problme  
1,013
irek kordirko
02/01/2012 11:14AM
Re: Join Query Performance Problme  
1,053
johne doe
02/02/2012 12:39AM
Re: Join Query Performance Problme  
1,017
johne doe
02/02/2012 06:47AM
Re: Join Query Performance Problme  
1,028
irek kordirko
02/02/2012 07:02PM
Re: Join Query Performance Problme  
1,010
johne doe
02/03/2012 12:29AM
Re: Join Query Performance Problme  
1,252
irek kordirko
02/03/2012 11:27AM
Re: Join Query Performance Problme  
1,022
Rick James
02/04/2012 10:39AM
Re: Join Query Performance Problme  
1,182
johne doe
02/14/2012 06:08PM
Re: Join Query Performance Problme  
1,032
johne doe
02/06/2012 06:13AM
query cost calculations  
3,652
Silpa Majeti
02/11/2012 04:01AM
Re: query cost calculations  
1,303
Øystein Grøvlen
02/13/2012 07:13PM
Re: query cost calculations  
1,452
Rick James
02/12/2012 01:03PM
Strange performance results with JOIN/COUNT  
2,099
Tomas Pluskal
02/08/2012 06:25PM
Re: Strange performance results with JOIN/COUNT  
995
Øystein Grøvlen
02/09/2012 03:01AM
Re: Strange performance results with JOIN/COUNT  
1,372
Tomas Pluskal
02/09/2012 03:13AM
Re: Strange performance results with JOIN/COUNT  
1,261
irek kordirko
02/11/2012 02:53AM
Re: Strange performance results with JOIN/COUNT  
960
Tomas Pluskal
02/12/2012 06:44PM
Strange performance with JOIN/COUNT  
2,312
Tomas Pluskal
02/09/2012 12:30AM
Re: Strange performance with JOIN/COUNT  
1,012
Rick James
02/11/2012 11:11PM
Why MySQL does not use an index?  
2,576
Panayotis Matsinopoulos
01/16/2012 02:50AM
Re: Why MySQL does not use an index?  
1,172
Rick James
01/19/2012 12:25AM
Re: Why MySQL does not use an index?  
1,231
Panayotis Matsinopoulos
02/10/2012 01:21AM
Re: Why MySQL does not use an index?  
1,170
Rick James
02/11/2012 10:48PM
Re: Why MySQL does not use an index?  
1,064
irek kordirko
02/10/2012 09:50AM
MySQL 5.5 Query Optimizer - Massive Regression (vs 5.0)  
2,661
Chris Ricks
02/02/2012 01:17AM
Re: MySQL 5.5 Query Optimizer - Massive Regression (vs 5.0)  
1,090
Chris Ricks
02/01/2012 07:33PM
Re: MySQL 5.5 Query Optimizer - Massive Regression (vs 5.0)  
1,018
Øystein Grøvlen
02/02/2012 03:58AM
Re: MySQL 5.5 Query Optimizer - Massive Regression (vs 5.0)  
1,055
Chris Ricks
02/02/2012 04:43AM
Re: MySQL 5.5 Query Optimizer - Massive Regression (vs 5.0)  
1,022
Rick James
02/03/2012 11:57PM
Re: MySQL 5.5 Query Optimizer - Massive Regression (vs 5.0)  
1,128
Chris Ricks
02/02/2012 03:06AM
running running running  
1,973
paolo tome
01/30/2012 03:16AM
Re: running running running  
1,063
Øystein Grøvlen
01/30/2012 02:39AM
Re: running running running  
905
paolo tome
01/30/2012 09:13AM
Re: running running running  
852
paolo tome
01/31/2012 05:44AM
Re: running running running  
993
Øystein Grøvlen
01/31/2012 07:54AM
Re: running running running  
1,074
paolo tome
01/31/2012 03:10AM
Re: running running running  
1,038
Ole John Aske
01/31/2012 05:00PM
How to avoid filesort in ORDER BY?  
3,924
Andy S
01/26/2012 10:58PM
Re: How to avoid filesort in ORDER BY?  
1,747
irek kordirko
01/27/2012 08:20AM
avoid filesort  
1,702
Magnus Larsson
01/22/2012 01:08PM
Re: avoid filesort  
1,073
Rick James
01/24/2012 01:17AM
Re: avoid filesort  
1,167
Magnus Larsson
01/24/2012 04:36PM
Re: avoid filesort  
1,093
Rick James
01/25/2012 08:26PM
Re: avoid filesort  
1,082
Magnus Larsson
01/26/2012 04:56AM
Re: avoid filesort  
1,252
irek kordirko
01/25/2012 07:24PM
Re: avoid filesort  
1,083
Magnus Larsson
01/26/2012 04:57AM
Simple 1-table query taking WAY to long.....  
1,567
Jason Moore
01/23/2012 02:31AM
Re: Simple 1-table query taking WAY to long.....  
1,023
Rick James
01/24/2012 01:09AM
want to make this query faster, but not sure how  
2,240
Luc Foisy
01/19/2012 09:55AM
Re: want to make this query faster, but not sure how  
1,132
irek kordirko
01/19/2012 05:39PM
Re: want to make this query faster, but not sure how  
1,255
Luc Foisy
01/20/2012 10:51AM
Re: want to make this query faster, but not sure how  
850
Luc Foisy
01/19/2012 10:12AM
Re: want to make this query faster, but not sure how  
853
Luc Foisy
01/19/2012 10:29AM
MySQL 5.6: Optimizer Tracing  
1,329
Edwin DeSouza
01/19/2012 12:07PM
Query no longer uses index, takes much longer to run  
1,992
Richard Cunningham
01/09/2012 12:36PM
Re: Query no longer uses index, takes much longer to run  
877
Jørgen Løland
01/10/2012 01:43PM
Re: Query no longer uses index, takes much longer to run  
906
Richard Cunningham
01/10/2012 03:54PM
Weird issue with join buffer (Performance suffers)  
1,825
Ozgur Orhan
01/10/2012 01:54AM
Re: Weird issue with join buffer (Performance suffers)  
1,327
Jørgen Løland
01/10/2012 01:37PM
Problem with a query performance  
2,695
V Pode
01/04/2012 01:43PM
Re: Problem with a query performance  
1,156
Rick James
01/05/2012 10:41AM
Re: Problem with a query performance  
1,072
V Pode
01/06/2012 12:36PM
Re: Problem with a query performance  
1,075
Rick James
01/07/2012 10:52AM
index not used when join condition added  
2,500
Daniel Walter
01/02/2012 11:55AM
Re: index not used when join condition added  
1,136
Rick James
01/03/2012 08:42PM
Re: index not used when join condition added  
1,154
Daniel Walter
01/03/2012 09:49PM
Re: index not used when join condition added  
1,433
Rick James
01/04/2012 06:26PM
Re: index not used when join condition added  
1,066
Daniel Walter
01/04/2012 07:21PM
Re: index not used when join condition added  
1,010
Rick James
01/04/2012 06:28PM
Primary key index with a DATETIME as first part of the compound key is never used  
4,947
jeremy cohen solal
12/30/2011 08:10AM
Re: Primary key index with a DATETIME as first part of the compound key is never used  
1,678
Rick James
01/02/2012 09:06PM
help me, optimize a long running query  
2,832
h ch
10/25/2011 12:00AM
Re: help me, optimize a long running query  
1,109
Massimo Brignoli
10/26/2011 06:48AM
Re: help me, optimize a long running query  
1,056
h ch
10/27/2011 12:39AM
Re: help me, optimize a long running query  
1,158
Rick James
10/27/2011 09:04PM
Re: help me, optimize a long running query  
1,435
h ch
12/26/2011 11:52PM
Re: help me, optimize a long running query  
964
Rick James
12/27/2011 10:00PM
This topic has been moved.:  difference between READ and SCAN  
0
Linhai Song
06/20/2012 05:47PM
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