> Dear Santa, > > I'd like my database to have functionality analogue to how LIMIT works, > but for other - non-sequential - algorithms. There was some discussion before to possibly reuse the algorithm ANALYZE is using for sampling some given percentage of the table data and provide this for some kind of "SELECT SAMPLE x% " style of functionality. This would be the fastest you can get for a reasonably big sample so it can be statistically significant, but not repeatable. I'm not sure if this is the same what you were asking for though, I would like something like this for statistical stuff, not for randomly selecting rows. Cheers, Csaba. ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster