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Message from discussion help with aggregation & group by
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David Lee  
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 More options Jan 3 2008, 5:11 pm
From: David Lee <davidomu...@gmail.com>
Date: Thu, 3 Jan 2008 14:11:17 -0800 (PST)
Local: Thurs, Jan 3 2008 5:11 pm
Subject: Re: help with aggregation & group by
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Another food for thought would be to have the Order.query cache the
generated SQL query so the second time the block is run, it doesn't
have to generate the SQL code all over again.

A potential problem is the fixation of dynamically generated values
such as the "market" or "ack_stamp" variables in the example code.

I'm not sure how far you can go with ParseTree, but you could search
for the presence of dynamic elements (variables, methods...) in the
block passed to Order.query and turn on caching only if it only
contains static elements (constants, integers, symbols...).


 
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