Hello, I'm looking for a better tutorial of how EXPLAIN works. I know Mr. Tom Lane wrote a "quick & dirty explanation" and that "plan-reading is an art that deserves a tutorial, and I haven't had time to write one". In which case I'd like to know if there's any other tutorials/resources. I think I get the jist of it (an index scan is better than a seq scan?) but I'd like to read more. Does anybody have any suggestions? -- Dave ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster