From: Martin Gainty Date: August 29 2008 3:32pm Subject: RE: performance key-value - int vs ascii ? List-Archive: http://lists.mysql.com/mysql/214298 Message-Id: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="_3c464a9b-dc68-4f6f-909a-59cdc22087c0_" --_3c464a9b-dc68-4f6f-909a-59cdc22087c0_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable addresses the case for using ENUM over VARCHAR for low cardinality columns For performance issues on which sort algorithm does a join select is addres= sed at http://dev.mysql.com/doc/refman/5.0/en/index-merge-optimization.html ? Martin=20 ______________________________________________=20 Disclaimer and confidentiality note=20 Everything in this e-mail and any attachments relates to the official busin= ess of Sender. This transmission is of a confidential nature and Sender doe= s not endorse distribution to any party other than intended recipient. Send= er does not necessarily endorse content contained within this transmission.= =20 > Date: Fri=2C 29 Aug 2008 15:30:16 +0200 > From: wharms@stripped > To: perrin@stripped > CC: mysql@stripped > Subject: Re: performance key-value - int vs ascii ? >=20 > thx=2C > the results support my suspect >=20 > re=2C > wh >=20 >=20 > Perrin Harkins schrieb: > > On Fri=2C Aug 29=2C 2008 at 4:57 AM=2C walter harms wro= te: > >> Since diskspace is plenty i thinking about to use the name directly. d= oes > >> anyone has any idea > >> what is the performance penalty ? > >=20 > > http://www.mysqlperformanceblog.com/2008/01/24/enum-fields-vs-varchar-v= s-int-joined-table-what-is-faster/ > >=20 > > - Perrin > >=20 > >=20 >=20 > --=20 > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/mysql?unsub=3Dmgainty@stripped= om >=20 _________________________________________________________________ See what people are saying about Windows Live. Check out featured posts. http://www.windowslive.com/connect?ocid=3DTXT_TAGLM_WL_connect2_082008= --_3c464a9b-dc68-4f6f-909a-59cdc22087c0_--