Re: [PERFORM] index on custom function; explain
Hi, On Mon, Oct 03, 2005 at 08:14:11AM -0700, [EMAIL PROTECTED] wrote: So my questions are: * Does anyone have any idea how I can integrate a function that lists all aliases for a given name into such a mapping query? what version are you using? TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match Cheers, Yann ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [PERFORM] index on custom function; explain
Some additional thoughts: what appears to take the most time (i.e. account for the highest cost in the explain), is _not_ running the function itself (cost=0.00..0.01), but comparing the result from that function with the name1 column in the mappings table (cost=0.00..35935.05). Am I right? (See EXPLAIN in previous post.) If so: that's pretty strange, because the name1-column in the mappings table is indexed... jan. ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
