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* Remove default aliases from aggregate functionsJoshua Cody2014-07-311-14/+8
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* Allow for alias omission in aggregate expressionsJoshua Cody2014-07-261-8/+15
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* Add #extract, which produces ANSI SQL function EXTRACT(<field> from <expr>).Alexander Staubo2012-02-231-0/+4
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* refactoring expressions to a moduleAaron Patterson2010-09-141-0/+23