大约有 47,000 项符合查询结果(耗时:0.0363秒) [XML]

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The entity cannot be constructed in a LINQ to Entities query

... p in db.Products where p.CategoryID == categoryID select new ProductDTO { Name = p.Name }).ToList(); } share | improve this answer | follow ...
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How to get last N records with activerecord?

...e-wise - at least not up to Rails 3.1. SomeModel.last(5) will execute the select statement without a limit, returning all records of SomeModel to Ruby as an array, after which Ruby will pick out the last (5) elements. Efficiency-wise, currently, you want to use limit - particularly if you have pote...
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How to reset sequence in postgres and fill id column with new data?

... SELECT setval('seq', 1, FALSE) should do the same (here, the third argument, FALSE, does the magic, as it shows that nextval must be 1 instead of 2) – Vasilen Donchev Sep 22 '15 at 14:43...
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Debugging App When Launched by Push Notification

...opdown. (⌘+<) Than choose your product - 'Run MyApp.app' on the left. Select 'Info' tab on the right. And finally choose "Wait for MyApp.app to launch" option. More here in "Customize Executables in the Scheme Editor" section. EDIT: In case you miss logs in GDB, see Louis Gerbarg's comment t...
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Is there a function to deselect all text using JavaScript?

Is there a function in javascript to just deselect all selected text? I figure it's got to be a simple global function like document.body.deselectAll(); or something. ...
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How do you list the primary key of a SQL Server table?

... SELECT Col.Column_Name from INFORMATION_SCHEMA.TABLE_CONSTRAINTS Tab, INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE Col WHERE Col.Constraint_Name = Tab.Constraint_Name AND Col.Table_Name = Tab.Table_Name ...
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How to execute a bash command stored as a string with quotes and asterisk [duplicate]

...quotes. MYSQL='mysql AMORE -u username -ppassword -h localhost -e' QUERY="SELECT "'*'" FROM amoreconfig" ;# <-- "double"'single'"double" eval $MYSQL "'$QUERY'" Bonus: It also reads nice: eval mysql query ;-) share ...
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How to comment and uncomment blocks of code in the Office VBA Editor

...tor, go to View, Toolbars, Customise... or right click on the tool bar and select Customise... Under the Commands tab, select the Edit menu on the left. Then approximately two thirds of the way down there's two icons, Comment Block and Uncomment Block. Drag and drop these onto your toolbar and th...
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MySQL IF NOT NULL, then display 1, else display 0

... SELECT c.name, IF(a.addressid IS NULL,0,1) AS addressexists FROM customers c LEFT JOIN addresses a ON c.customerid = a.customerid WHERE customerid = 123 ...
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Dynamic Sorting within SQL Stored Procedures

...eing duplicated twice in the order by, and is a little more readable IMO: SELECT s.* FROM (SELECT CASE @SortCol1 WHEN 'Foo' THEN t.Foo WHEN 'Bar' THEN t.Bar ELSE null END as SortCol1, CASE @SortCol2 WHEN 'Foo' THEN t.Foo WHEN 'Bar' THEN t.Bar ELSE...