几个月前MySql以10亿美元卖给了Sun,作为Mysql的老大,原MySql的CEO,现任Sun负责数据库的高级副总裁Marten Mickos 最近心情似乎不太好。为什么呢?Marten Mickos在参加4月9日在德克萨斯大学超级计算中心召开的Linux基金合作峰会上被质疑:MySql是否要脱离Li
几个月前MySql以10亿美元卖给了Sun,作为Mysql的老大,原MySql的CEO,现任Sun负责数据库的高级副总裁Marten Mickos 最近心情似乎不太好。为什么呢?Marten Mickos在参加4月9日在德克萨斯大学超级计算中心召开的Linux基金合作峰会上被质疑:MySql是否要脱离Linux体系?
亲Linux的人群担心,Sun在收购Mysql以后,很可能将以后的支持重点转移到SAMP架构上,即(Solaris, Apache, MySQL, Perl/PHP/Python),而不是LAMP架构(Linux, Apache, MySQL, Perl/PHP/Python),后者给Linux带来每年210亿美金的巨大服务器市场。
Marten Mickos在他的演讲中回答Sun/MySql将继续支持Linux,但是他也补充到,如果Sun有一天不再支持Linux,按照Mysql的授权许可,任何一个开发者和公司都可以把MySql的代码拿过来自己修改,放在Linux系统上。 但是这种说法让一些Linux代理商疑惑,因为维护一个类似于MySql这样的DBMS数据库管理系统是一件非常艰巨而庞大的工作,大部分开发者和代理商都希望MySql能向以前一样优质迅速的兼容最新版本的Linux,而开发者只要在LAMP架构上写自己的代码就够了。
而且虽然Marten Mickos说明Sun将继续支持GPLv3许可,即最新最流行的开源许可,Linux开发者也知道Sun有自己的许可协议,即CDDL许可(Common Development and Distribution License),OpenSolaris就是在CDDL许可下。如果Sun对Mysql的改进在CDDL许可下,这将限制它的开发者在应用中使用最新的MySql。不过目前似乎没有什么可以担心的,即使Sun的Mysql和Linux关系不那么紧密了,Sun和redhat,ubuntu都是合作伙伴关系,Sun应该会在很长一段时间内维持和增进基于MySql LAMP架构的繁荣。
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Yes,youcansearchinsideaBLOBinMySQLusingspecifictechniques.1)ConverttheBLOBtoaUTF-8stringwithCONVERTfunctionandsearchusingLIKE.2)ForcompressedBLOBs,useUNCOMPRESSbeforeconversion.3)Considerperformanceimpactsanddataencoding.4)Forcomplexdata,externalproc

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TomasterMySQLBLOBs,followthesesteps:1)ChoosetheappropriateBLOBtype(TINYBLOB,BLOB,MEDIUMBLOB,LONGBLOB)basedondatasize.2)InsertdatausingLOAD_FILEforefficiency.3)Storefilereferencesinsteadoffilestoimproveperformance.4)UseDUMPFILEtoretrieveandsaveBLOBsco

BlobdatatypesinmysqlareusedforvoringLargebinarydatalikeImagesoraudio.1) Useblobtypes (tinyblobtolongblob) Basedondatasizeneeds. 2) Storeblobsin Perplate Petooptimize Performance.3) ConsidersxterNal Storage Forel Blob Romana DatabasesizerIndimprovebackupupe

ToadduserstoMySQLfromthecommandline,loginasroot,thenuseCREATEUSER'username'@'host'IDENTIFIEDBY'password';tocreateanewuser.GrantpermissionswithGRANTALLPRIVILEGESONdatabase.*TO'username'@'host';anduseFLUSHPRIVILEGES;toapplychanges.Alwaysusestrongpasswo

MySQLofferseightstringdatatypes:CHAR,VARCHAR,BINARY,VARBINARY,BLOB,TEXT,ENUM,andSET.1)CHARisfixed-length,idealforconsistentdatalikecountrycodes.2)VARCHARisvariable-length,efficientforvaryingdatalikenames.3)BINARYandVARBINARYstorebinarydata,similartoC


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