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Subject Views Written By Posted
MySQL My.cnf Config Help   1,697 Mathieu Louis 10/03/2013 09:32PM
Very slow dependent subquery   1,852 patrick canarelli 09/18/2013 03:06AM
Re: Very slow dependent subquery   1,026 Øystein Grøvlen 09/18/2013 07:06AM
Re: Very slow dependent subquery   993 patrick canarelli 09/18/2013 07:51AM
Re: Very slow dependent subquery   1,000 Øystein Grøvlen 09/18/2013 02:57PM
Re: Very slow dependent subquery   908 Peter Brawley 09/18/2013 02:13PM
Re: Very slow dependent subquery   956 patrick canarelli 09/18/2013 03:10PM
Re: Very slow dependent subquery   945 Rick James 09/24/2013 10:04PM
Re: Very slow dependent subquery   1,056 patrick canarelli 09/25/2013 12:53AM
big database +1 million rows/days   1,928 khaoula el hammoumi 09/11/2013 04:06AM
Re: big database +1 million rows/days   934 khaoula el hammoumi 09/12/2013 01:37AM
Re: big database +1 million rows/days   928 Rick James 09/13/2013 10:59PM
Optimize query join with 25,000 records   1,639 Andrea Presazzi 08/26/2013 02:27AM
Re: Optimize query join with 25,000 records   864 Rick James 08/31/2013 04:19PM
Index not used for JOIN on compound key plus WHERE range filter   2,432 Chad B 08/15/2013 09:24AM
Re: Index not used for JOIN on compound key plus WHERE range filter   1,129 Chad B 08/15/2013 10:44AM
Re: Index not used for JOIN on compound key plus WHERE range filter   998 Rick James 08/31/2013 04:13PM
query index not used   1,391 Adrian Petre 08/15/2013 05:23AM
Re: query index not used   797 Rick James 08/31/2013 03:41PM
optimize request with order by and limit   1,902 yassine laouija 07/18/2013 05:26AM
Re: optimize request with order by and limit   989 Rick James 07/20/2013 10:25PM
Re: optimize request with order by and limit   912 yassine laouija 07/22/2013 09:46AM
Re: optimize request with order by and limit   798 Rick James 07/23/2013 08:58AM
Re: optimize request with order by and limit   884 yassine laouija 07/26/2013 04:07AM
Re: optimize request with order by and limit   899 Rick James 07/26/2013 11:53PM
Re: optimize request with order by and limit   897 yassine laouija 07/29/2013 04:40AM
Re: optimize request with order by and limit   906 Rick James 08/01/2013 10:39PM
providing a single line for multiple records from a table   1,518 raja chacham 07/23/2013 09:56AM
Re: providing a single line for multiple records from a table   780 Rick James 07/24/2013 09:08AM
Optimize Inner Join With WHERE BETWEEN dates   2,496 Anthony Galano 05/21/2013 07:32PM
Re: Optimize Inner Join With WHERE BETWEEN dates   1,183 Rick James 05/22/2013 06:41PM
Re: Optimize Inner Join With WHERE BETWEEN dates   1,085 Anthony Galano 05/24/2013 12:40PM
Re: Optimize Inner Join With WHERE BETWEEN dates   1,063 Rick James 05/25/2013 11:43AM
Re: Optimize Inner Join With WHERE BETWEEN dates   975 Anthony Galano 05/30/2013 05:30PM
Re: Optimize Inner Join With WHERE BETWEEN dates   1,013 Rick James 06/02/2013 01:15PM
Re: Optimize Inner Join With WHERE BETWEEN dates   1,015 Anthony Galano 06/03/2013 05:02PM
Re: Optimize Inner Join With WHERE BETWEEN dates   1,810 Rick James 06/04/2013 11:49PM
Query optimization   1,970 Jan Kowalski 05/10/2013 05:35AM
Re: Query optimization   1,001 Rick James 05/12/2013 08:42PM
Re: Query optimization   962 Jan Kowalski 05/15/2013 06:45AM
Re: Query optimization   910 Jan Kowalski 05/15/2013 08:35AM
Re: Query optimization   950 Rick James 05/16/2013 08:18AM
Re: Query optimization   938 Jan Kowalski 05/17/2013 03:52AM
Re: Query optimization   940 Rick James 05/17/2013 11:47PM
Re: Query optimization   873 Jan Kowalski 05/21/2013 08:51AM
Re: Query optimization   944 Jan Kowalski 05/22/2013 08:08AM
MySQL Optimizer: When is a Subquery Executed?   1,447 Edwin Desouza 05/02/2013 10:05AM
Index optimized left join with group by   2,301 Michal Kurgan 03/11/2013 05:41PM
Re: Index optimized left join with group by   971 Øystein Grøvlen 03/12/2013 04:16AM
Select last row that is less than or equal to a date   4,849 David Marcus 01/23/2013 06:35PM
Re: Select last row that is less than or equal to a date   1,325 Rick James 01/24/2013 10:27PM
Re: Select last row that is less than or equal to a date   1,276 David Marcus 01/26/2013 09:35AM
Re: Select last row that is less than or equal to a date   1,187 Rick James 01/27/2013 10:19AM
Re: Select last row that is less than or equal to a date   1,179 David Marcus 01/27/2013 12:00PM
Re: Select last row that is less than or equal to a date   1,077 Rick James 01/29/2013 12:51AM
Re: Select last row that is less than or equal to a date   1,076 David Marcus 01/29/2013 06:28PM
Re: Select last row that is less than or equal to a date   1,381 Øystein Grøvlen 01/30/2013 04:50AM
Re: Select last row that is less than or equal to a date   1,184 David Marcus 01/30/2013 05:50PM
Re: Select last row that is less than or equal to a date   1,077 Øystein Grøvlen 02/01/2013 06:03AM
Re: Select last row that is less than or equal to a date   1,115 David Marcus 02/02/2013 07:14AM
Re: Select last row that is less than or equal to a date   1,134 Øystein Grøvlen 02/02/2013 01:49PM
Re: Select last row that is less than or equal to a date   1,095 David Marcus 02/02/2013 02:25PM
Re: Select last row that is less than or equal to a date   1,059 Øystein Grøvlen 02/03/2013 05:58AM
Re: Select last row that is less than or equal to a date   1,097 David Marcus 02/03/2013 10:04AM
Re: Select last row that is less than or equal to a date   1,164 Rick James 02/03/2013 10:43AM
Re: Select last row that is less than or equal to a date   1,528 David Marcus 02/03/2013 12:33PM
Re: Select last row that is less than or equal to a date   1,153 Rick James 02/03/2013 02:59PM
Re: Select last row that is less than or equal to a date   1,148 David Marcus 02/03/2013 03:35PM
Re: Select last row that is less than or equal to a date   1,175 Rick James 02/03/2013 04:02PM
Re: Select last row that is less than or equal to a date   1,219 David Marcus 02/03/2013 04:15PM
Very slow query, help please   1,855 Jaume Roca 01/29/2013 10:18AM
Re: Very slow query, help please   1,053 Øystein Grøvlen 01/30/2013 05:12AM
Re: Very slow query, help please   1,054 Rick James 01/30/2013 08:38AM
Re: Very slow query, help please   1,127 Jaume Roca 01/30/2013 09:05AM
MySQL 5.6: IN Subqueries Are Optimized away   1,532 Edwin Desouza 01/29/2013 01:08PM
CPU load very very high !!!!, Please assist !!   5,832 Sayed Ali 01/22/2013 06:49AM
Re: CPU load very very high !!!!, Please assist !!   2,109 Rick James 01/22/2013 11:32PM
New EXPLAIN Features in MySQL 5.6 – FORMAT=JSON actually adds more information!   1,636 Edwin Desouza 01/22/2013 05:58PM
Can we expect an enhancement for derived table merge optimization?   2,633 Michael Hogue 01/04/2013 12:04PM
Re: Can we expect an enhancement for derived table merge optimization?   1,083 Rick James 01/07/2013 10:50PM
Re: Can we expect an enhancement for derived table merge optimization?   1,353 Roy Lyseng 01/11/2013 09:18AM
Re: Can we expect an enhancement for derived table merge optimization?   1,016 Rick James 01/13/2013 12:24PM
Re: Can we expect an enhancement for derived table merge optimization?   1,087 Roy Lyseng 01/14/2013 08:43AM
Re: Can we expect an enhancement for derived table merge optimization?   936 Rick James 01/14/2013 09:54AM
Re: Can we expect an enhancement for derived table merge optimization?   1,045 Roy Lyseng 01/15/2013 06:15AM
Re: Can we expect an enhancement for derived table merge optimization?   1,003 Roy Lyseng 01/11/2013 08:51AM
How to best optimize MYSQL Database   1,851 Muhammad Usman 12/10/2012 03:45AM
Re: How to best optimize MYSQL Database   958 Rick James 12/21/2012 12:49PM
mysql subquery query optimization question   1,982 Yong Yim 01/12/2013 09:24AM
Re: mysql subquery query optimization question   926 Rick James 01/13/2013 11:30AM
Create a New Datatype   1,759 Andy Gurzynski 01/06/2013 01:00AM
Re: Create a New Datatype   876 Rick James 01/07/2013 11:01PM
MySQL Optimizer: InnoDB extended secondary keys   1,688 Edwin Desouza 12/21/2012 12:12PM
Optimizer for innodb does not reduce "data_free"   3,032 Sebastian Schött 12/06/2012 03:39AM
Re: Optimizer for innodb does not reduce "data_free"   1,236 Rick James 12/08/2012 01:33PM
Complex query - need advise   1,954 chris boer 11/03/2012 04:16PM
Re: Complex query - need advise   997 chris boer 11/03/2012 04:24PM
Re: Complex query - need advise   959 chris boer 11/04/2012 10:05AM
Re: Complex query - need advise   1,284 Rick James 11/05/2012 11:12AM
Follow up on "Query Execution Plan"   1,739 Chris Slominski 10/24/2012 11:59AM
Re: Follow up on "Query Execution Plan"   927 Chris Slominski 10/25/2012 11:14AM
Re: Follow up on "Query Execution Plan"   815 Chris Slominski 10/25/2012 06:15AM
JOIN query too slow   1,830 N. Kovac 10/13/2012 11:52AM
Re: JOIN query too slow   859 Peter Brawley 10/14/2012 10:26AM
Re: JOIN query too slow   870 Rick James 10/16/2012 07:48PM
bulk update very slow   3,833 james che 09/25/2012 02:51PM
Re: bulk update very slow   1,393 james che 09/26/2012 02:58PM
Re: bulk update very slow   1,324 Rick James 09/27/2012 08:19PM
Re: bulk update very slow   1,462 Jørgen Løland 09/27/2012 12:01PM
Why Query Cache Actived Returns Wrong Results?   1,874 Daniel Estrada 09/22/2012 08:57PM
Re: Why Query Cache Actived Returns Wrong Results?   1,017 Rick James 09/23/2012 03:46PM
Re: Why Query Cache Actived Returns Wrong Results?   1,108 Daniel Estrada 09/23/2012 08:24PM
Re: Why Query Cache Actived Returns Wrong Results?   892 Rick James 09/24/2012 11:43PM
Join? Union? I am so lost.   1,725 Hank Reardon 09/17/2012 09:09AM
Re: Join? Union? I am so lost.   854 Rick James 09/18/2012 07:48AM
How make indexes work with group by statement   1,639 Adnan Raza 09/13/2012 12:48AM
Re: How make indexes work with group by statement   880 Rick James 09/15/2012 10:34PM
Re: How make indexes work with group by statement   934 Jørgen Løland 09/13/2012 01:50AM
Query Optimizer Problem - OrderBy - 5.0.51 to 5.5.27   1,904 Dominik Bieringer 09/05/2012 02:57AM
Re: Query Optimizer Problem - OrderBy - 5.0.51 to 5.5.27   887 Rick James 09/06/2012 10:42PM
Re: Query Optimizer Problem - OrderBy - 5.0.51 to 5.5.27   895 Øystein Grøvlen 09/06/2012 04:32AM
optimize the query   1,731 ch srinivas 08/27/2012 10:47PM
Re: optimize the query   955 Øystein Grøvlen 08/28/2012 01:43AM
Re: optimize the query   837 ch srinivas 08/29/2012 04:15AM
Re: optimize the query   834 Øystein Grøvlen 08/29/2012 04:39AM
Re: optimize the query   815 ch srinivas 08/29/2012 05:38AM
Re: optimize the query   878 Rick James 08/30/2012 07:20AM
Query with GROUP BY not using Index   2,037 Imran Akbar 08/14/2012 01:06PM
Re: Query with GROUP BY not using Index   970 Øystein Grøvlen 08/15/2012 02:46AM
Re: Query with GROUP BY not using Index   929 Imran Akbar 08/16/2012 10:30AM
Re: Query with GROUP BY not using Index   974 Øystein Grøvlen 08/17/2012 02:58AM
Re: Query with GROUP BY not using Index   928 Rick James 08/18/2012 10:30PM
Re: Query with GROUP BY not using Index   862 Imran Akbar 08/24/2012 12:41PM
Re: Query with GROUP BY not using Index   948 Øystein Grøvlen 08/28/2012 03:11AM
Re: Query with GROUP BY not using Index   937 Imran Akbar 08/28/2012 06:21PM
Re: Query with GROUP BY not using Index   1,114 Øystein Grøvlen 08/29/2012 01:28AM
Re: Query with GROUP BY not using Index   887 Imran Akbar 08/29/2012 10:36AM
CONCAT and Index in where clause   6,834 Aurelien PANIZZA 08/22/2012 08:45AM
Re: CONCAT and Index in where clause   2,671 Øystein Grøvlen 08/23/2012 01:15AM
Re: CONCAT and Index in where clause   2,176 Rick James 08/23/2012 09:13PM
Re: CONCAT and Index in where clause   2,168 Aurelien PANIZZA 08/27/2012 09:53AM
Re: CONCAT and Index in where clause   2,308 Øystein Grøvlen 08/28/2012 02:50AM
Simple query spending too much time in 'statistics' state without reason   7,852 Vincent B. 08/21/2012 06:19AM
Re: Simple query spending too much time in 'statistics' state without reason   4,574 Jørgen Løland 08/24/2012 06:24AM
Re: Simple query spending too much time in 'statistics' state without reason   3,323 Vincent B. 08/28/2012 01:53AM
Re: Simple query spending too much time in 'statistics' state without reason   4,255 Rick James 08/22/2012 07:44PM
Order By Slows down Joins   2,710 Sami BH 08/22/2012 09:12AM
Re: Order By Slows down Joins   783 Rick James 08/23/2012 08:56PM
always uses filesort even after adding indexes   1,715 Pranav Gore 08/22/2012 02:49AM
Re: always uses filesort even after adding indexes   857 Rick James 08/22/2012 10:52PM
STRAIGHT_JOIN for OUTER JOINGS   2,373 Paul Tsui 08/19/2012 08:28PM
Re: STRAIGHT_JOIN for OUTER JOINGS   1,058 Øystein Grøvlen 08/20/2012 05:16AM
CPU usage 99% - and query very slow - help   3,223 irox ferenc 08/03/2012 10:49AM
Re: CPU usage 99% - and query very slow - help   1,269 Rick James 08/04/2012 01:36PM
Re: CPU usage 99% - and query very slow - help   1,884 robert eeeeee 08/06/2012 01:04PM
Re: CPU usage 99% - and query very slow - help   1,165 Øystein Grøvlen 08/15/2012 03:09AM
Execution plan: wrong index selected, very poor performance.   2,730 Andrej Andrejevic 07/18/2012 10:31AM
Re: Execution plan: wrong index selected, very poor performance.   1,191 Rick James 07/19/2012 10:07PM
Re: Execution plan: wrong index selected, very poor performance.   1,084 Andrej Andrejevic 07/20/2012 01:38AM
Re: Execution plan: wrong index selected, very poor performance.   945 Andrej Andrejevic 07/24/2012 04:27AM
Re: Execution plan: wrong index selected, very poor performance.   976 Rick James 07/25/2012 12:21AM
Index for Query   1,789 dileep ch 07/17/2012 12:41AM
Re: Index for Query   865 Rick James 07/17/2012 10:36PM
Re: Index for Query   908 dileep ch 07/18/2012 11:52PM
Re: Index for Query   1,477 Rick James 07/19/2012 09:49PM
best way to optimize this query   1,852 Jap bn 07/14/2012 09:54AM
Re: best way to optimize this query   1,233 Rick James 07/15/2012 10:11PM
Optimizer being overly aggressive   1,773 Adrian Cornish 07/06/2012 08:18PM
Re: Optimizer being overly aggressive   905 Rick James 07/10/2012 12:49PM
Re: Optimizer being overly aggressive   956 Adrian Cornish 07/10/2012 08:54PM
multiple-column index and order by   2,006 Raphael Hoffmann 07/06/2012 05:59PM
Re: multiple-column index and order by   937 Rick James 07/10/2012 12:55PM
From Months to Seconds with Subquery Materialization   1,348 Edwin DeSouza 07/09/2012 11:15AM
performing mysqldump corrected query issue?   1,699 Peter Sylvester 06/26/2012 01:12PM
Re: performing mysqldump corrected query issue?   956 Rick James 07/01/2012 06:43PM
Re: performing mysqldump corrected query issue?   821 Peter Sylvester 06/26/2012 02:08PM
difference between READ and SCAN   1,517 Linhai Song 06/20/2012 04:05PM
Re: difference between READ and SCAN   763 Rick James 06/20/2012 08:23PM
Re: difference between READ and SCAN   932 Linhai Song 06/21/2012 12:19PM
to optimize a self join request   1,415 Oracleuser user 06/14/2012 08:23AM
Re: to optimize a self join request   886 Rick James 06/15/2012 08:19AM
Call out for FULL JOIN - bug #18003   1,569 ted strauss 06/14/2012 10:23AM
Re: Call out for FULL JOIN - bug #18003   730 ted strauss 06/14/2012 12:13PM
index cannot be used when passing 'int' to 'varchar'   1,974 liao zhifeng 06/10/2012 11:16PM
Re: index cannot be used when passing 'int' to 'varchar'   806 Rick James 06/11/2012 11:27PM
Re: index cannot be used when passing 'int' to 'varchar'   831 liao zhifeng 06/12/2012 12:48AM
Re: index cannot be used when passing 'int' to 'varchar'   869 Rick James 06/12/2012 09:23PM
Re: index cannot be used when passing 'int' to 'varchar'   950 liao zhifeng 06/12/2012 11:16PM
Re: index cannot be used when passing 'int' to 'varchar'   830 Rick James 06/13/2012 07:15PM
Re: index cannot be used when passing 'int' to 'varchar'   806 liao zhifeng 06/13/2012 10:35PM
This topic has been moved.:  difference between READ and SCAN   0 Linhai Song 06/20/2012 05:47PM
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