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Using Where Using Temporary Using Filesort Group By

 
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MessagePosté le: Dim 17 Déc - 23:00 (2017)    Sujet du message: Using Where Using Temporary Using Filesort Group By Répondre en citant

Using Where Using Temporary Using Filesort Group By
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2.2..MySQL..Using..temporary..filesort..order..byMySQL..expain...GROUP.BY.MySQLGROUP.BY.col1col2.ORDER.BY.col1,col2...ALL......countnum......NULL......NULL......NULL......2926112......Using...where;...Using...temporary..........range......countnum......countnum......4......NULL......1290525......Using...where;...Using.......Web.Windowsusingwhere,.Using.temporary.,usingfilesort.,donnie,,,...2...group.order.3...To..determine..whether..a..query..requires..a..temporary..table,..use..EXPLAIN..and..check..the..Extra..column..to..see..whether..it..says..Using..temporary...See..Section..8.8.1...EXPLAIN.sql2.Using.temporary.;.Using.filesort.explain.sql.using.temporary.filesort..GROUP.BY.MySQLGROUP.BY.col1col2...The..important..things..to..notice..here..are..temporary..and..filesort...Fixing..temporary..requires..carefully..defining..indices,.....order..specified..when..using..:group.Using.filesort,Using.temporary..2013-01-09.13:05:15......I'm..planning..on..creating..a..view..using..this..SQL..SELECT,..but..the..explain..for..it..shows..it's..using..temporary..and..using..filesort...I..can't..figure..out..what..indices..I..need..in...GROUP...BY...MySQLGROUP...BY...col1col2.ORDER...BY...col1,col2.....Not.really,.because.you.do.group.by.one.set.of.columns.and.sort.groups.by.unrelated.column..Think.how.would.you.execute.such.query.without.using.temporary.table.and..Group..by..without..temporary..table..and..filesort......GROUP..BY..Links.id.....I..would..like..to..get..rid..of..the..using..temporary..and..I'm..not..sure..if..it's..possible.Using...index;...Using...temporary;...Using...filesort...--/...MySQL...temporary...filesort.......sum(iMoney)as...iMoney,iAction...from...CostMoney...where...iType...=...3...and...dtEventTime...between...'2012-09-29'...and...'2012-09-30'...group...by.......range...test...test...9...NULL...3893...Using....(10...replies)...I...wonder...if...anyone...could...help...with...a...query...which...I've...been...unable...to...prevent...from...using...a...filesort....Might...be...something...obvious...I'm...overlooking!...I...have...a....Web.WindowsEXPLAIN...sql2...Using...temporary...;...Using...filesort......2016-05-12...11:20:33...1731...0...SQLMySQLCC++C#......GROUP...BY.......MySQL..Using..temporary;..Using..filesort..INNER..JOINfilesortinner....SHOW..FULL..PROCESSLISTSQL..SELECT..post...What.does.Using.filesort.mean.in.MySQL?.Baron.Schwartz...this.is.not.the.same.thing..First.of.all,.this.is.Using.temporary....Group.Replication.(11).GTID.(10..Using.temporary;.Using.filesort:.UNION.RESULT...2.Responses.to.'MySQL:.GROUP.BY.in.UNION'.Subscribe.to.comments.with.RSS..Im.not.sure.what.your.workaround.is..J....C....Penney...(stylized...as...JCPenney)...is...an...American...department...store...chain...with...1095...locations...in...49...U.S....states...and...Puerto...Rico.sql.explain.extra.Using.temporary.;.Using.filesort,Stars,...GROUP.BY...Anyone...have...any...thoughts...on...how...I...might...optimize...this...query?...It...takes...about...2...seconds....I...know...that...seems...quick,...but...we...get...nearly...30,000...hits...per...second...and...so...if...we....SQLMySQL"Using...temporary;...Using...filesort"...ORDER...BYcommits.dateORDER...BY....Using..index,..using..temporary,..using..filesort.....And..this..blog..from..2009..says..that.."using..filesort"..means..that..the.....JOIN..and..Group..By..query..is..Using..temporary..and...ExtraUsing..temporaryUsing..filesortUsing..whereUsing.......Using..index..for..group-by...sum(iMoney)as...iMoney,iAction...from...CostMoney...where...iType...=...3...and...dtEventTime...between...'2012-09-29'...and...'2012-09-30'...group...by.......range...test...test...9...NULL...3893...Using....:.MySQL.Using.temporary;.Using.filesort.INNER.JOINSHOW.FULL.PROCESSLISTSQLSELECT.post.*.FROM.post..[MySQL]..Join..using..temporary,..filesort;.....with.."Using..temporary;..Using..filesort"..and..the..query..takes..way..too..long....explain/descSQLextraUsing...temporaryUsing...filesort[MySQL].Join.using.temporary,.filesort;...with."Using.temporary;.Using.filesort".and.the.query.takes.way.too.long...Using..filsort..Mysqlwhere...Using.temporaryUsing.filesortUsing.filsort.Mysqlwhere..Simple..Select..Group..By..using..filesort.....(SQL)..-..Codedump.io......Using..explain..with..the..group..by..shows..that..it's..creating..a..temporary..table..rather..than..using... 10c6d764d5
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