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PostgreSQL - fetch the row which has the Max value for a column
...id, time_stamp))
Bill's query has a cost estimate of 93k, and completes in 2.9 seconds (given a compound index on (usr_id, trans_id))
Query #1 below has a cost estimate of 16k, and completes in 800ms (given a compound index on (usr_id, trans_id, time_stamp))
Query #2 below has a cost estimate of 14k...
Can I install the “app store” in an IOS simulator?
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This is NOT possible
The Simulator does not run ARM code, ONLY x86 code. Unless you have the r...
What does rake db:test:prepare actually do?
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answered Mar 2 '13 at 2:26
Richard BrownRichard Brown
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SQL Server 2008 can't login with newly created user
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edited Nov 21 '12 at 5:16
Bobrovsky
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How can I merge properties of two JavaScript objects dynamically?
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What do the python file extensions, .pyc .pyd .pyo stand for?
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How to overload std::swap()
...wap for built-in types
swap(a.base1, b.base1);
swap(a.base2, b.base2);
// ...
swap(a.member1, b.member1);
swap(a.member2, b.member2);
// ...
}
};
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Data structure for loaded dice?
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edited Sep 12 '12 at 18:12
Peter Mortensen
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App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
... 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 App Inventor 2 CustomWebView 拓展：高...