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How to find duplicates in 2 columns not 1
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You should set up a composite key between the two fields. This will require a unique stone_id a...
Passing multiple error classes to ruby's rescue clause in a DRY fashion
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edited Jan 14 '16 at 2:08
user513951
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What can I do with a moved-from object?
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Moved-from objects exist in an unspecified, but valid, state. That suggests that whilst the obje...
Mongoose indexing in production code
...yHKJohnnyHK
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How to handle multiple heterogeneous inputs with Logstash?
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answered Dec 13 '13 at 8:24
Ben LimBen Lim
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MIN/MAX vs ORDER BY and LIMIT
... As a meaningless data point, MIN() took .36s while SORT and LIMIT took .84s against a 106,000 row table on my dev server.
If, however, you're looking at an indexed column, the difference is harder to notice (meaningless data point is 0.00s in both cases). Looking at the output of explain, howeve...
Adding code to a javascript function programmatically
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driangledriangle
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How do I initialize the base (super) class?
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4 Answers
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How to check if std::map contains a key without doing insert?
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PotatoswatterPotatoswatter
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Naming convention for Scala constants?
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wjohnson
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answered Mar 17 '12 at 1:36
Daniel C. SobralDaniel ...