From: walter harms Date: October 29 2012 1:54pm Subject: Re: optimize and tmpfiles List-Archive: http://lists.mysql.com/mysql/228516 Message-Id: <508E8A81.9070902@bfs.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Am 29.10.2012 13:17, schrieb Reindl Harald: > > > Am 29.10.2012 12:48, schrieb walter harms: >> hi list, >> does someone know under what circumstances ''optimize tables'' will >> create a tmpfile? > > under all if it is MyISAM and for "select id from table order by rand();" too > interessting, i was trying to force it (with optimize) but it did not work. Is there a way to restrict the maximum size of those tmpfiles ? re, wh