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
26795
August 11, 2005 11:25AM
23384
August 12, 2005 09:07AM
18768
August 12, 2005 01:06PM
18236
August 22, 2005 09:46AM
16284
August 24, 2005 03:27PM
12775
August 24, 2005 04:05PM
13455
August 26, 2005 11:02AM
7225
August 26, 2005 11:05AM
6594
August 26, 2005 11:45AM
6387
August 26, 2005 05:46PM
6666
August 26, 2005 10:34PM
6200
August 25, 2005 01:08PM
5659
August 26, 2005 11:07AM
5498
August 27, 2005 09:09AM
5795
August 29, 2005 11:50AM
5713
August 29, 2005 12:04PM
5056
August 29, 2005 12:55PM
4960
August 29, 2005 05:26PM
4914
August 29, 2005 06:34PM
4547
August 29, 2005 08:40PM
4445
August 29, 2005 08:47PM
4316
August 29, 2005 09:00PM
4528
August 30, 2005 10:05AM
4352
August 30, 2005 10:18AM
4925
August 30, 2005 10:20AM
5950
August 29, 2005 08:53PM
4820
August 29, 2005 09:50PM
4601
August 29, 2005 10:01PM
5024
August 30, 2005 08:53AM
4498
August 30, 2005 11:22AM
5023
August 30, 2005 11:33AM
4694
August 30, 2005 11:59AM
24157
August 31, 2005 02:32PM
6317
August 31, 2005 02:49PM
5039
August 31, 2005 02:56PM
4835
August 31, 2005 03:06PM
8072
December 07, 2006 10:30AM
4792
August 31, 2005 03:10PM
4691
August 31, 2005 03:32PM
17511
August 31, 2005 07:15PM
4909
September 01, 2005 03:05AM
7657
September 15, 2005 04:31PM
5371
September 01, 2005 04:39AM
4256
September 08, 2005 09:53AM
4590
September 08, 2005 11:25AM
4441
September 26, 2005 11:52AM
4317
September 26, 2005 12:13PM
4271
September 27, 2005 09:55AM
4006
September 27, 2005 10:18AM
3916
September 28, 2005 10:29AM
4075
September 28, 2005 10:34AM
4215
September 28, 2005 10:52AM
4724
September 28, 2005 10:58AM
9474
September 23, 2005 01:56AM
4716
September 23, 2005 07:11AM
4741
October 05, 2005 04:58AM
4565
October 05, 2005 04:52PM
5910
October 05, 2005 11:49PM
5227
October 06, 2005 01:34AM
6473
October 06, 2005 04:57PM
4448
December 13, 2005 10:28AM
4443
December 13, 2005 10:34AM
4350
November 17, 2005 09:39AM
4715
January 08, 2007 12:12PM
4614
December 12, 2005 02:13PM
4449
December 14, 2005 11:43PM
4015
December 15, 2005 08:37AM
4118
December 15, 2005 11:18AM
4018
December 15, 2005 11:27AM
4137
December 15, 2005 11:32AM
3890
December 15, 2005 11:43AM
3822
December 15, 2005 11:43AM
3986
December 15, 2005 11:48AM
3882
December 15, 2005 11:51AM
Re: Server just hanging (Copying to tmp table)
4293
December 15, 2005 02:14PM
3952
December 15, 2005 02:18PM
3809
December 15, 2005 02:27PM
4302
December 15, 2005 02:43PM
3888
December 15, 2005 08:46AM
4849
January 26, 2006 12:38PM
3992
January 26, 2006 01:48PM
4088
January 26, 2006 01:48PM
3839
January 26, 2006 01:52PM
3998
January 27, 2006 04:46PM
3824
January 29, 2006 11:21AM
4189
January 30, 2006 09:42AM
4228
February 27, 2006 02:17PM
3928
February 27, 2006 02:23PM
4144
March 05, 2006 04:56AM
3975
March 06, 2006 08:09AM
3938
April 05, 2006 01:03PM
4122
September 27, 2006 08:43AM
4088
November 19, 2006 04:42AM
4248
December 14, 2006 05:45PM
4038
February 01, 2007 04:40AM
4684
November 11, 2007 01:24PM
4921
December 20, 2007 10:40AM
6278
January 21, 2008 10:14AM
5681
January 21, 2008 10:53AM
5122
May 19, 2008 09:41AM
5360
February 05, 2008 10:27AM
5855
March 12, 2008 08:37AM
5180
May 19, 2008 03:02AM
5949
November 14, 2008 12:31AM
6845
March 06, 2009 03:36PM