大约有 43,000 项符合查询结果（耗时：0.0408秒） [XML]
MySQL “NOT IN” query
...s not seem to depend on data distribution, number of values in both tables etc., as long as both fields are indexed. Since there are three pieces of code in MySQL that essentialy do one job, it is possible that the code responsible for EXISTS makes some kind of an extra check which takes extra time....
Ruby function to remove all white spaces?
... question used the phrase "all whitespace", which includes tabs, newlines, etc. This proposed answer will not remove those other whitespace characters. As for "overly complex", I suggest comparing the simple regular expression to .delete(' ').delete('\t').delete('\n') ..., which is overly verbose an...
Mvn install or Mvn package
...create a jar file.
mvn install will do that and install the jar (and class etc.) files in the proper places if other code depends on those jars.
I usually do a mvn clean install; this deletes the target directory and recreates all jars in that location.
The clean helps with unneeded or removed st...
AngularJS: Is there any way to determine which fields are making a form invalid?
...t may violate (invalid email format, out of range / max / min definition, etc.). This is the easiest way.
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Is it possible to disable scrolling on a ViewPager
... It is still possible to "scroll" by focusing elements (buttons, etc.) in the pages when using a game controller or keyboard for instance. How to disable that completely? I guess it's another type of event that should be intercepted...
– David Ferrand
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How does this site infecting script work?
...ged forms and reading $_POST and $_GET with replacing <> and http:// etc.
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Converting string to Date and DateTime
...ad of crashing, you will get an exception, which you can catch, propagate, etc.
$dateDE has the wrong format, it should be "16.10.2013";
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Capitalize first letter. MySQL
..., 2));
This would turn hello to Hello, wOrLd to WOrLd, BLABLA to BLABLA, etc. If you want to upper-case the first letter and lower-case the other, you just have to use LCASE function :
UPDATE tb_Company
SET CompanyIndustry = CONCAT(UCASE(LEFT(CompanyIndustry, 1)),
LC...
View/edit ID3 data for MP3 files
What's a quick and easy way to view and edit ID3 tags (artist, album, etc.) using C#?
6 Answers
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Why can't I see the “Report Data” window when creating reports?
...how Data Sources" section brings the "Website Data Sources" section which fetches all Entities, Typed DataSets etc.
The keybord shortcut is (Shift+Alt+D).
The twisty part here is the "Data Sources" section available with the Server Explorer toolbar doesnt bring up any stuff but the "Website Data S...