Query returns too few rows
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: setup: mysql>createtableproduct_stock( product_idinteger,qtyinteger); QueryOK,0rowsaffected(0.17sec)......
MySQL driver problem in my dynamic web project (JP
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Cuttingtothecase. Persistence.xml <?xmlversion="1.0"encoding="UTF-8"?> <persistencexmlns="http://java.sun.com...
How to on Performance_schema in mysql?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iwanttoturnperformance_schemaONinmysqltocollectstatistics. HowcanIachievethis? 回答1: Thefollowingg......
MySQL select query is terribly slow
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihaveatablewith2196998records: CREATETABLEprice( dtTIMESTAMPNOTNULLDEFAULTCURRENT_TIMESTAMP, mar......
Windows 8 & MySQL? What are my options?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IamcurrentlywritingaMetroapplicationandIwanttointegratemanagedSQLhandlingwithinmyappbyconnectingitto......
Why the order of evaluation for expressions involv
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: FromMySQLManualtheoutputofthefollowingqueryisnotguaranteedtobesamealways. SET@a:=0; SELECT @aASfir......
Can't install mysql2 for rails 3 on Windows
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Can'tinstallmysql2withoutanerrormessage.I'vetriedeverywayIcanthinkofincludingusingdevkit. geminstallm......
ColdFusion: Application Options Based on Role?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Iunderstandhowtorestrictentirepages,orevencomponentsbyimplementing<cflogin>androles.Forexample: <cfifIs......
MySQL Repeatable Read isolation level and Lost Upd
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: InHighPerformanceJavaPersistencebook's6.3.3.3sectionit'swrittenthatLostUpdatephenomenaispossibleinMySQL......
request counting for documents in apache solr
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihaveasimplewebsitethatisusingapachesolrforrequestofspecificdocuments.NowIhavetocountthetotalnumber......
Rails active record query getting most common obje
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IamtryingtoqueryamodeltogetthemostcommonfieldofacertainattributesofarIhave Person.maximum('age') B......
Getting Max date from multiple table after INNER J
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihavetwofollowingtables table1) ID|HOTELID|NAME 1100xyz 2101pqr 3102......
Is it possible to order multiple columns by using
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IamusingRubyonRails3.2.2andIwouldliketoknowifitispossibletoordermultiplecolumns/fieldsbyusingtheO......
Hive's hour() function returns 12 hour clock v
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: AccordingtothedocumentationHivesstandardfunctionhour()shouldreturnavaluebetween0and24butforsomereason......
Laravel checkbox filter ajax
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ineedtorealizeacheckboxfilterforvacanciesbasedonajax.SoIhavesomecategoriesonpage,andwhenusermarkss......
How can I count the row number in the returned gro
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: HowcanIgettherownumberinthereturnedmysqlquery?Letsay,ifmyqueryisreturningsome5rowsasaresult,Iwa......
How can I count something before inserting?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: Ihavethistable: //cookies +---------+-------------------------+------------------+------------+ |id|......
Mysql数据迁移,从A表赋值B表,同一个表从C字段赋值到D字段,通过SQL实现
以下都是本人亲自测试,绝对靠谱。 INSERTINTOmdm_area_copy1(id,parent_id,area_name,code,level)SELECTid,parent_id,area_name,code,levelFROMmdm_area;mdm_area_copy1目标表mdm_area来源表 这条sql执行时要注意的是:目标表必须为空表,否......
Mysql - Stored procedure not using the query cache
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IhavejustconvertedaSQLselectstatementintoastoredprocedure TheSQLStatementuseselectstatementtakes 0.478......
Connect Parse with external database?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):问题: IamworkingonprojectwhereitisbuildusingtraditionaltechnologieslikePHP,mysqlanditisawebapplication. Now......