SQL Server 2005 Pivot on Unknown Number of Columns
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What is the use of the square brackets [] in sql s
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: I'venoticedthatVisualStudio2008isplacingsquarebracketsaroundcolumnnamesinsql.Dothebracketsofferanyadvantage?WhenIhand......
What is the correct SQL type to store a .Net Times
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Removing leading zeroes from a field in a SQL stat
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: IamworkingonaSQLquerythatreadsfromaSQLServerdatabasetoproduceanextractfile.Oneoftherequirementstoremovetheleadingz......
Floor a date in SQL server
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: InSQLServer,howdoI"floor"aDATETIMEtothesecond/minute/hour/day/year? Let'ssaythatIhaveadateof2008-09-1712:56:53.430,then......
Preferred Method of Storing Passwords In 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: Whatisyourpreferredmethod/datatypeforstoringpasswordsinadatabase(preferablySQLServer2005).ThewayIhavebeendoingitinseve......
Datatype for storing ip address in SQL Server
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: WhatdatatypeshouldIchooseforstoringanIPAddressinaSQLServer? Byselectingtherightdatatypewoulditbeeasyenoughtofilterb......
Which are more performant, CTE or temporary tables
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: Whicharemoreperformant,CTEorTemporaryTables? 回答1: I'dsaytheyaredifferentconceptsbutnottoodifferenttosay"chalkandch......
Copy tables from one database to another in SQL Se
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: Ihaveadatabasecalledfooandadatabasecalledbar.IhaveatableinfoocalledtblFoobarthatIwanttomove(dataandall)todatabase......
How to select all records from one table that do n
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Difference between left join and right join in SQL
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: IknowaboutjoinsinSQLServer. Forexample.TherearetwotablesTable1,Table2. Theirtablestructuresarethefollowing. createtabl......
get a comma delimited string from rows [duplicate]
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How Do I Insert A Byte[] Into an SQL Server VARBIN
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SQL Server Linked Server Example Query
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Remove Identity from a column in a table
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: Wehavea5GBtable(nearly500millionrows)andwewanttoremovetheidentitypropertyononeofthecolumn,butwhenwetrytodothisth......
How can I convert bigint (UNIX timestamp) to datet
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: HowcanIconvertUNIXtimestamp(bigint)toDateTimeinSQLServer? 回答1: try: CREATEFUNCTIONdbo.fn_ConvertToDateTime(@DatetimeBIG......
SQL: Select columns with NULL values only
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: HowdoIselectallthecolumnsinatablethatonlycontainNULLvaluesforalltherows?I'musingMSSQLServer2005.I'mtryingtofind......
Get first day of week in SQL Server
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: Iamtryingtogrouprecordsbyweek,storingtheaggregateddateasthefirstdayoftheweek.However,thestandardtechniqueIuseforrou......
Foreign Key to non-primary key
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: Ihaveatablewhichholdsdata,andoneofthoserowsneedstoexistinanothertable.So,Iwantaforeignkeytomaintainreferentialinte......
How to use a variable for the database name in T-S
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: Iusethedatabasenameinseveralplacesinmyscript,andIwanttobeabletoquicklychangeit,soI'mlookingforsomethinglikethis: ......