Tom, > We have also talked about solving the multi-column statistics problem > (which, at its core, is "which combinations of columns are worth > accumulating stats for?" --- you can't possibly store stats for every > combination!) by having what would amount to hints from the DBA saying > "keep stats for these combinations".
We could start just by keeping stats for multiple columns which are indexed together. That doesnt' cover everything (thanks to bitmapping) but would cover many cases. -- --Josh Josh Berkus PostgreSQL @ Sun San Francisco ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq