is optimizer depend on size of table? not sure On Mon, Aug 1, 2011 at 11:48 PM, Shafi AHMED <shafi.ah...@sifycorp.com>wrote:
> I hope the former better. > Test with query plan output, though > > Best Rgs, > Shafi AHMED > > > -----Original Message----- > From: Adarsh Sharma [mailto:adarsh.sha...@orkash.com] > Sent: Tuesday, August 02, 2011 12:12 PM > To: mysql@lists.mysql.com > Subject: Which is better > > Dear all, > > Just want to know which join is better for querying data faster. > > I have 2 tables A ( 70 GB ) & B ( 7 MB ) > > A has 10 columns & B has 3 columns.Indexes exist on both tables's ids. > > select p.* from table A p, B q where p.id=q.id > > or > > select p.* from table B q , A p where q.id=p.id > > > Thanks > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: > http://lists.mysql.com/mysql?unsub=shafi.ah...@sifycorp.com > > > > Get your world in your inbox! > > Mail, widgets, documents, spreadsheets, organizer and much more with your > Sifymail WIYI id! > Log on to http://www.sify.com > > ********** DISCLAIMER ********** > Information contained and transmitted by this E-MAIL is proprietary to > Sify Technologies Limited and is intended for use only by the individual or > entity to > which it is addressed, and may contain information that is privileged, > confidential or exempt from disclosure under applicable law. If this is a > forwarded message, the content of this E-MAIL may not have been sent with > the authority of the Company. If you are not the intended recipient, an > agent of the intended recipient or a person responsible for delivering the > information to the named recipient, you are notified that any use, > distribution, transmission, printing, copying or dissemination of this > information in any way or in any manner is strictly prohibited. If you have > received this communication in error, please delete this mail & notify us > immediately at ad...@sifycorp.com > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: > http://lists.mysql.com/mysql?unsub=aim.prab...@gmail.com > > -- Best Regards, Prabhat Kumar MySQL DBA My Blog: http://adminlinux.blogspot.com My LinkedIn: http://www.linkedin.com/in/profileprabhat
