Comments on: MySQL Insert with a Select Subquery http://www.robsearles.com/2009/04/05/mysql-insert-with-a-select-subquery/ Musing on the business of and development for "The Web" Sun, 15 Aug 2010 16:40:19 +0100 http://wordpress.org/?v=2.8.4 hourly 1 By: aryagarg http://www.robsearles.com/2009/04/05/mysql-insert-with-a-select-subquery/comment-page-1/#comment-56 aryagarg Fri, 27 Nov 2009 06:02:41 +0000 http://www.robsearles.co.uk/?p=75#comment-56 well gud job sir well gud job sir

]]> By: Rob Searles http://www.robsearles.com/2009/04/05/mysql-insert-with-a-select-subquery/comment-page-1/#comment-39 Rob Searles Wed, 07 Oct 2009 20:21:16 +0000 http://www.robsearles.co.uk/?p=75#comment-39 Thanks, glad you found it handy!<br><br>Having to cast my mind back here, but I think the mapping table was needed as it was just a coincidence that both group 103 always had 104 mapped to an identical band, just in this case. There were a load of other groups that were mapped to bands that didn't have a corresponding group mapping.<br><br>Also, would there be a speed issue with having a sub query and not a mapping table? TBH I'm not sure, but it's worth a thought. Thanks, glad you found it handy!

Having to cast my mind back here, but I think the mapping table was needed as it was just a coincidence that both group 103 always had 104 mapped to an identical band, just in this case. There were a load of other groups that were mapped to bands that didn't have a corresponding group mapping.

Also, would there be a speed issue with having a sub query and not a mapping table? TBH I'm not sure, but it's worth a thought.

]]> By: virtualtrader http://www.robsearles.com/2009/04/05/mysql-insert-with-a-select-subquery/comment-page-1/#comment-38 virtualtrader Wed, 07 Oct 2009 19:56:44 +0000 http://www.robsearles.co.uk/?p=75#comment-38 Thanks handy post. If you can simply use a subquery here, is your mapping table really needed then? Thanks handy post. If you can simply use a subquery here, is your mapping table really needed then?

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