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Does Foreign Key improve query performance?

Suppose I have 2 tables, Products and ProductCategories. Both tables have relationship on CategoryId. And this is the query. ...
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MetadataException: Unable to load the specified metadata resource

...string in App.Config looks correct - hasn't changed since last it worked - and I've tried regenerating a new model (edmx-file) from the underlying database with no change. ...
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How to select from subquery using Laravel Query Builder?

... In addition to @delmadord's answer and your comments: Currently there is no method to create subquery in FROM clause, so you need to manually use raw statement, then, if necessary, you will merge all the bindings: $sub = Abc::where(..)->groupBy(..); // El...
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SQL Server: Query fast, but slow from procedure

...s" in your stored procedure queries, but read the original for more understanding, it's a great write up. e.g. Slow way: CREATE PROCEDURE GetOrderForCustomers(@CustID varchar(20)) AS BEGIN SELECT * FROM orders WHERE customerid = @CustID END Fast way: CREATE PROCEDURE GetOrderForCus...
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overlay opaque div over youtube iframe

...windowed which essentially gives it a z-index greater then everything else and it will overlay over anything. Try appending this GET parameter to your URL: wmode=opaque like so: https://www.youtube.com/embed/kRvL6K8SEgY?wmode=opaque Make sure its the first parameter in the URL. Other paramete...
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Unzip All Files In A Directory

... The filenames also had spaces in them, FWIW. – Max Candocia Mar 31 '19 at 13:47  |  show 1 more comment ...
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Interface/enum listing standard mime-type constants

I am looking among the standard libraries (like apache commons, jax, jboss, javax) for an interface or enum that lists the values of all the standard mime-type (aka content-type). ...
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diff current working copy of a file with another branch's committed copy

...have a repo with file foo in the master branch. I switched to bar branch and made some changes to foo . How can I now run a git diff between this copy (which isn't committed yet) and the copy of the master branch? ...
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How to remove \xa0 from string in Python?

I am currently using Beautiful Soup to parse an HTML file and calling get_text() , but it seems like I'm being left with a lot of \xa0 Unicode representing spaces. Is there an efficient way to remove all of them in Python 2.7, and change them into spaces? I guess the more generalized question would...
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What is the GAC in .NET?

...le without worrying about conflicts. No more DLL Hell. Each architecture and version gets it's own place to live. It also gets it own way to browse it in Explorer, so if you go to C:\Windows\assembly In windows explorer it lists all the DLLs. But if you fire up cmd, you can see how it's ...