大约有 47,000 项符合查询结果（耗时：0.0722秒） [XML]
is it possible to select EXISTS directly as a bit?
...ike 'theValue%'
When you cast to bit
0 -> 0
everything else -> 1
And NULL -> NULL of course, but you can't get NULL with COUNT(*) without a GROUP BY
bit maps directly to boolean in .net datatypes, even if it isn't really...
This looks similar but gives no row (not zero) if no matches...
I didn't find “ZipFile” class in the “System.IO.Compression” namespace
... a dll reference to the assembly, "System.IO.Compression.FileSystem.dll" - and ensure you are using at least .NET 4.5 (since it doesn't exist in earlier frameworks).
For info, you can find the assembly and .NET version(s) from MSDN
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JSR-303 @Valid annotation not working for list of child objects
...sses member of UserAddressesForm with @Valid annotation. See section 3.1.3 and 3.5.1 of JSR 303: Bean Validation. As I explained in my answer to the question Is there a standard way to enable JSR 303 Bean Validation using annotated method, this is the real use of @Valid annotation as per JSR 303.
E...
Should I use the datetime or timestamp data type in MySQL?
Would you recommend using a datetime or a timestamp field, and why (using MySQL)?
39 Answers
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C# pattern to prevent an event handler hooked twice [duplicate]
Duplicate of: How to ensure an event is only subscribed to once
and Has an event handler already been added?
9 Answers
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How big can a user agent string get?
...pt, throwing 413 Entity Too Large if it exceeds.
Depending on web-server and their settings these limits vary from 4KB to 64KB (total for all headers).
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jQuery Data vs Attr?
What is the difference in usage between $.data and $.attr when using data-someAttribute ?
3 Answers
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Go install fails with error: no install location for directory xxx outside GOPATH
...User/me/gopath).
After either, going into the go-statsd-client directory and typing go install will work, and so will typing go install go-statsd-client from anywhere in the filesystem. The built binaries will go into $GOPATH/bin.
As an unrelated suggestion, you probably want to namespace your pa...
SQL: How to properly check if a record exists
...optimize SELECT COUNT(*) anyway, so while there is a difference in theory (and older databases), you shouldn't notice any difference in practice.
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Why did Bootstrap 3 switch to box-sizing: border-box?
I'm migrating my Bootstrap themes from v2.3.2 to v3.0.0 and one thing I noticed is that a lot of dimensions are calculated differently, due to the following styles in bootstrap.css.
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