On 5 Jan, Tom Lane wrote: > Josh Berkus <[EMAIL PROTECTED]> writes: >> 2) DEVELOP BETTER PLANS FOR "OR GROUP" QUERIES > >> Summary: Currently, queries with complex "or group" criteria get devolved by >> the planner into canonical and-or filters resulting in very poor execution on >> large data sets. We should find better ways of dealing with these queries, >> for example UNIONing. > >> Description: While helping OSDL with their derivative TPC-R benchmark, we ran >> into a query (#19) which took several hours to complete on PostgreSQL. > > I've made some progress on this over the last week or two. Would it be > possible to retry that benchmark with CVS tip? Yeah, no problem. We'll pull the code from CVS and give it a try.
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