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How do I convert an interval into a number of hours with postgres?
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7
And maybe floor or cast the result to integer if the interval contains minutes and/or seconds
– rasjani
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How can I define a composite primary key in SQL?
...ULL. If you do a query like this:
SELECT * FROM voting WHERE QuestionID = 7
it will use the primary key's index. If however you do this:
SELECT * FROM voting WHERE MemberID = 7
it won't because to use a composite index requires using all the keys from the "left". If an index is on fields (A,B,...
Why is '397' used for ReSharper GetHashCode override?
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167
Probably because 397 is a prime of sufficient size to cause the result variable to overflow and ...
Matplotlib (pyplot) savefig outputs blank image
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YannYann
25.6k66 gold badges7171 silver badges6565 bronze badges
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Strip Leading and Trailing Spaces From Java String
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Prince John WesleyPrince John Wesley
57.4k1111 gold badges7979 silver badges9191 bronze badges
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Copy text to clipboard with iOS
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Iulian Onofrei
6,77988 gold badges5252 silver badges9393 bronze badges
answered Nov 5 '11 at 19:58
samvermettesamverme...
Force add despite the .gitignore file
... it worked
– Jako
Aug 28 '15 at 20:47
4
This only works for me using wildcards, using git 1.9.5 o...
“Width equals height” constraint in Interface Builder
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187
Update Xcode 5.1b5
Ctrl+click and drag from a view and release while the pointer is over the ...
Excluding directories in os.walk
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edited Sep 7 at 13:13
FLASH3G
333 bronze badges
answered Nov 8 '13 at 13:10
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PHP regular expressions: No ending delimiter '^' found in
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edited Jan 8 '11 at 17:09
answered Jan 8 '11 at 17:04
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