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ActiveRecord.find(array_of_ids), preserving order
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The answer is for mysql only
There is a function in mysql called FIELD()
Here is how you could use it in .find():
>> ids = [100, 1, 6]
=> [100, 1, 6]
>> WordDocument.find(ids).collect(&:id)
=> [1, 6, 100]
>> WordDocument.find(ids, :order => "field(id...
SQL WHERE ID IN (id1, id2, …, idn)
...ble inner join temp on temp.id = table.id
And performance improved drastically.
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3 Answers
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..._pick
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END
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