Re: [HACKERS] Planning aggregates which require sorted or distinct input

2007-01-19 Thread Karen Hill
Gavin Sherry wrote: > Recenly, I've been researching and putting together a proposal for window > functions. Implementing NULLS FIRST and NULLS LAST appears like another challenging step to getting window functions wrapped up. Has your research lead you to any ideas on what your strategy for NULL

Re: [HACKERS] Planning aggregates which require sorted or distinct input

2007-01-19 Thread Tom Lane
Gavin Sherry <[EMAIL PROTECTED]> writes: > What we want to do is have a kind of 'sub plan' for each aggregate. In > effect, the plan might start looking like a directed graph. Here is part > of the plan as a directed graph. >GroupAggregate > /