大约有 48,000 项符合查询结果(耗时:0.0488秒) [XML]

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How to display unique records from a has_many through relationship?

...r the SQL DISTINCT stmt (e.g. has_many :products, :through => :orders, :select => "DISTINCT products.*). In the first case, ALL records are fetched and rails removes the duplicates for you. In the later case, only non-duplicate records are fetched from the db so it might offer better performan...
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Add CSS or JavaScript files to layout head from views or partial views

...where IncludesCurrentBrowser(s.ServeTo) select s.Url); } return returnVal; } internal IEnumerable<string> UsedStyles() { SetOrder(); var returnVal = new List<string>(); ...
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SQL update trigger only when column is modified

...dDate, ModifiedUser, ModifiedHost, QtyToRepairOld, QtyToRepairNew) SELECT S.OrderNo, S.PartNumber, GETDATE(), SUSER_NAME(), HOST_NAME(), D.QtyToRepair, I.QtyToRepair FROM SCHEDULE S INNER JOIN Inserted I ON S.OrderNo = I.OrderNo and S.PartNumber = I.PartNumber INNER JOIN Dele...
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Using port number in Windows host file

...do what you want with generic OS-level configuration - the browser is what selects the port to choose. So use bookmarks or something like that. (Some firewall/routing software might allow outbound port redirection, but that doesn't really sound like an appealing option for this.) ...
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How to configure PostgreSQL to accept all incoming connections

...s you have to reload the configuration. One way to do this is execute this SELECT as a superuser. SELECT pg_reload_conf(); share | improve this answer | follow ...
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When would you use delegates in C#? [closed]

...ionString = psConnectionString; } public void UseReader( string psSELECT, DataReaderUser readerUser ) { using ( SqlConnection connection = new SqlConnection( _connectionString ) ) try { SqlCommand command = new SqlCommand( psSELECT, connection ); ...
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Is there a way to make a PowerShell script work by double clicking a .ps1 file?

...won't show windows folder) i.e. C:\Windows\System32\WindowsPowerShell\v1.0 select powershell.exe select "Always use this app to open .ps1 files" click OK share | improve this answer | ...
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Pry: show me the stack

... stack items. For example, if my project name were archie I'd use: caller.select {|line| line.include? "archie" } Which gives me the stack trace I'm looking for. A shorter way would be: caller.select {|x| x["archie"] } Which works just as well. ...
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Which version of the git file will be finally used: LOCAL, BASE or REMOTE?

..., the three-way tab is always the third tab, while the first tab is always selected by default. Is there a way to make the three-way tab selected by default? – Sam Kauffman Dec 1 '15 at 20:33 ...
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Flatten List in LINQ

... Try SelectMany() var result = iList.SelectMany( i => i ); share | improve this answer | follow ...