大约有 47,000 项符合查询结果(耗时:0.0666秒) [XML]

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EF LINQ include multiple and nested entities

...de: Course course = db.Courses .Include(i => i.Modules.Select(s => s.Chapters)) .Include(i => i.Lab) .Single(x => x.Id == id); Your solution fails because Include doesn't take a boolean operator Include(i => i.Modules.Select(s => ...
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“CASE” statement within “WHERE” clause in SQL Server 2008

... Try the following: select * From emp_master where emp_last_name= case emp_first_name when 'test' then 'test' when 'Mr name' then 'name' end share | ...
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How to determine the number of days in a month in SQL Server?

...er of days in the month. DECLARE @ADate DATETIME SET @ADate = GETDATE() SELECT DAY(EOMONTH(@ADate)) AS DaysInMonth share | improve this answer | follow | ...
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Limit file format when using ?

...te of <input type = "file"> can help to provide a filter in the file select dialog box of the OS. For example, <!-- (IE 10+, Edge (EdgeHTML), Edge (Chromium), Chrome, Firefox 42+) --> <input type="file" accept=".xls,.xlsx" /> should provide a way to filter out files other...
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How can I drop all the tables in a PostgreSQL database?

... You can write a query to generate a SQL script like this: select 'drop table "' || tablename || '" cascade;' from pg_tables; Or: select 'drop table if exists "' || tablename || '" cascade;' from pg_tables; In case some tables are automatically dropped due to cascade option in a...
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Auto-expanding layout with Qt-Designer

...your widget/dialog/window (not the QVBoxLayout, but the parent widget) and select Lay Out -> Lay Out in a Grid from the bottom of the context-menu. The QVBoxLayout should now stretch to fit the window and will resize automatically when the entire window is resized. ...
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How can I resolve “Error: No developer directory found at /Developer”?

... sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer share | improve this answer | follow ...
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Sorting rows in a data table

... Its Simple Use .Select function. DataRow[] foundRows=table.Select("Date = '1/31/1979' or OrderID = 2", "CompanyName ASC"); DataTable dt = foundRows.CopyToDataTable(); And it's done......Happy Coding ...
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How do I query for all dates greater than a certain date in SQL Server?

... select * from dbo.March2010 A where A.Date >= Convert(datetime, '2010-04-01' ) In your query, 2010-4-01 is treated as a mathematical expression, so in essence it read select * from dbo.March2010 A where A.Date &g...
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TFS: Updating branch with changes from main

... From Visual Studio, open Source Control Explorer: View | Team Explorer Select your Team Project from Team Explorer, expand it, and double click Source Control In the left-hand pane of Source Control Explorer, select your Team Project. In the right-hand pane, find your mainline branch, right-clic...