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From: Daniel Farina on 20 Mar 2010 13:11
In the function "subquery_is_pushdown_safe", there is an immediate
"false" returned if the subquery has a windowing function. While that
seems true in general, are there cases where we can push down a qual
if it is on the partitioning key? Or do NULLs or some other detail
get in the way?

fdr

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