Re: Server just hanging (Copying to tmp table)
Posted by:
Jay Pipes
Date: December 15, 2005 02:14PM
Not a big deal. The best explanation I can give for when to use a LEFT JOIN is the following:
Use a left join when you have two sets of data, say set A and set B, that are related through some common field(s), and you want to have *all* rows of set A appear in your final result *regardless* of whether there is a matching row in set B. The "left" part of LEFT JOIN simply means the table (or dataset) on the *left* side of the ON expression, that's all.
HTH, and good to see everything's working OK.
Jay Pipes
Community Relations Manager, North America, MySQL Inc.
Got Cluster?
http://www.mysql.com/cluster
Personal:
http://jpipes.com
Subject
Views
Written By
Posted
26673
August 11, 2005 11:25AM
23341
August 12, 2005 09:07AM
18731
August 12, 2005 01:06PM
18192
August 22, 2005 09:46AM
16234
August 24, 2005 03:27PM
12728
August 24, 2005 04:05PM
13404
August 26, 2005 11:02AM
7176
August 26, 2005 11:05AM
6550
August 26, 2005 11:45AM
6340
August 26, 2005 05:46PM
6625
August 26, 2005 10:34PM
6156
August 25, 2005 01:08PM
5617
August 26, 2005 11:07AM
5456
August 27, 2005 09:09AM
5752
August 29, 2005 11:50AM
5671
August 29, 2005 12:04PM
5023
August 29, 2005 12:55PM
4924
August 29, 2005 05:26PM
4874
August 29, 2005 06:34PM
4497
August 29, 2005 08:40PM
4411
August 29, 2005 08:47PM
4273
August 29, 2005 09:00PM
4494
August 30, 2005 10:05AM
4309
August 30, 2005 10:18AM
4878
August 30, 2005 10:20AM
5904
August 29, 2005 08:53PM
4780
August 29, 2005 09:50PM
4560
August 29, 2005 10:01PM
4982
August 30, 2005 08:53AM
4469
August 30, 2005 11:22AM
4964
August 30, 2005 11:33AM
4657
August 30, 2005 11:59AM
24116
August 31, 2005 02:32PM
6275
August 31, 2005 02:49PM
5008
August 31, 2005 02:56PM
4794
August 31, 2005 03:06PM
8029
December 07, 2006 10:30AM
4752
August 31, 2005 03:10PM
4654
August 31, 2005 03:32PM
17475
August 31, 2005 07:15PM
4871
September 01, 2005 03:05AM
7617
September 15, 2005 04:31PM
5333
September 01, 2005 04:39AM
4212
September 08, 2005 09:53AM
4554
September 08, 2005 11:25AM
4404
September 26, 2005 11:52AM
4276
September 26, 2005 12:13PM
4231
September 27, 2005 09:55AM
3969
September 27, 2005 10:18AM
3876
September 28, 2005 10:29AM
4034
September 28, 2005 10:34AM
4176
September 28, 2005 10:52AM
4689
September 28, 2005 10:58AM
9401
September 23, 2005 01:56AM
4682
September 23, 2005 07:11AM
4705
October 05, 2005 04:58AM
4530
October 05, 2005 04:52PM
5862
October 05, 2005 11:49PM
5195
October 06, 2005 01:34AM
6422
October 06, 2005 04:57PM
4417
December 13, 2005 10:28AM
4415
December 13, 2005 10:34AM
4306
November 17, 2005 09:39AM
4683
January 08, 2007 12:12PM
4575
December 12, 2005 02:13PM
4408
December 14, 2005 11:43PM
3975
December 15, 2005 08:37AM
4080
December 15, 2005 11:18AM
3978
December 15, 2005 11:27AM
4100
December 15, 2005 11:32AM
3851
December 15, 2005 11:43AM
3790
December 15, 2005 11:43AM
3945
December 15, 2005 11:48AM
3845
December 15, 2005 11:51AM
Re: Server just hanging (Copying to tmp table)
4257
December 15, 2005 02:14PM
3912
December 15, 2005 02:18PM
3780
December 15, 2005 02:27PM
4260
December 15, 2005 02:43PM
3849
December 15, 2005 08:46AM
4808
January 26, 2006 12:38PM
3886
January 26, 2006 01:48PM
4053
January 26, 2006 01:48PM
3806
January 26, 2006 01:52PM
3962
January 27, 2006 04:46PM
3792
January 29, 2006 11:21AM
4156
January 30, 2006 09:42AM
4192
February 27, 2006 02:17PM
3872
February 27, 2006 02:23PM
4115
March 05, 2006 04:56AM
3940
March 06, 2006 08:09AM
3907
April 05, 2006 01:03PM
4088
September 27, 2006 08:43AM
4054
November 19, 2006 04:42AM
4221
December 14, 2006 05:45PM
3999
February 01, 2007 04:40AM
4639
November 11, 2007 01:24PM
4893
December 20, 2007 10:40AM
6233
January 21, 2008 10:14AM
5648
January 21, 2008 10:53AM
5082
May 19, 2008 09:41AM
5334
February 05, 2008 10:27AM
5818
March 12, 2008 08:37AM
5148
May 19, 2008 03:02AM
5918
November 14, 2008 12:31AM
6796
March 06, 2009 03:36PM