Hey, all. I had a general SQL question. Often, I find myself needing to use

the syntax:

FROM a

LEFT JOIN b ON a.key = b.key AND b.field = 'Value'

because if I filter b.field in the WHERE clause, I've effectively made the

LEFT JOIN an inner one.

That makes me wonder, at what point do we stop moving conditions to the

JOIN clause? Obviously, some can't move for syntactical reasons, such as

subqueries. But short of that, when does it make sense to limit a non-outer

join in the join criteria? Never?

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