>> The problem for me is, the Recheck Cond is then on the xpath() function >> used by the function-based index. My understanding is that then the >> database must actually call the xpath() function again on all matches >> from >> the index lookup. > > This is mistaken. It only happens if there are so many hits that the > bitmap becomes lossy (which you can control to some extent anyway by > adjusting work_mem).
Ah, great. Thanks for clarifying. -- m@ ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
