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Postgresql: Conditionally unique constraint

...onstraint. – sage88 Mar 22 '18 at 7:21 add a comment  |  ...
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Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?

...or example. – Dan Tao Apr 30 '13 at 21:23 3 @DanTao: The expression d is evaluated only once, as ...
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How can I reference a commit in an issue comment on GitHub?

... | edited Mar 30 '16 at 21:27 answered Jan 18 '12 at 12:47 ...
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Can I make the foreign key field optional in Django model

...5 akki 8721414 silver badges2626 bronze badges answered Jul 8 '11 at 4:58 Abid AAbid A ...
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What's the (hidden) cost of Scala's lazy val?

...ing is OK. – iirekm Sep 28 '11 at 8:21 8 So, as of scala 2.10, what is the current implementation...
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@Override is not allowed when implementing interface method

... | edited Jul 12 '15 at 6:21 answered Jul 12 '15 at 6:07 Do...
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Enabling auto layout in iOS 6 while remaining backwards compatible with iOS 5

... answered Sep 21 '12 at 20:20 Imre KelényiImre Kelényi 21.7k55 gold badges3131 silver badges4444 bronze badges ...
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How can I disable editing cells in a WPF Datagrid?

... Leslie DaviesLeslie Davies 3,60211 gold badge1313 silver badges1414 bronze badges ...
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Using OR in SQLAlchemy

... 'Carl'))) – robru Aug 26 '15 at 20:21 69 @Robru's advice is unnecessarily inefficient. If you al...
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Import pandas dataframe column as string not int

...5.7307 4.9328 45.2525 4.66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.6924 13.8962 46.1709 13.2535 46.1709 11.9512V9.17788Z\"/\u003e\u003cpath d=\"M32.492 10.1419C32.492 12.6954 34.1182 14.0484 37.0451 14.0484C39.9723...