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Does MySQL ignore null values on unique constraints?

...Result: x NULL NULL 1 This is not true for all databases. SQL Server 2005 and older, for example, only allows a single NULL value in a column that has a unique constraint. share | improve this an...
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Why is parenthesis in print voluntary in Python 2.7?

...dited Feb 28 '19 at 21:08 user2357112 supports Monica 200k2020 gold badges287287 silver badges374374 bronze badges answered May 31 '11 at 4:25 ...
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How do I use arrays in C++?

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What does '--set-upstream' do?

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How to increase scrollback buffer size in tmux?

... 445 The history limit is a pane attribute that is fixed at the time of pane creation and cannot be c...
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Why covariance and contravariance do not support value type

...| edited Sep 17 '12 at 12:55 answered Sep 17 '12 at 7:37 Jo...
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How do I get current URL in Selenium Webdriver 2 Python?

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Android: How to change CheckBox size?

... 57 You just need to set the related drawables and set them in the checkbox: <CheckBox and...
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How to stop IntelliJ truncating output when I run a build?

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What is the Comonad typeclass in Haskell?

...ticles. – Bakuriu Aug 28 '14 at 18:15 3 "whenever you see large datastructures pieced together fr...