Gregory Stark wrote: > "Joshua D. Drake" <[EMAIL PROTECTED]> writes: > >> Just to throw my two bits in here :). If we do that, how does that >> effect the idea that most people in the web world use (id serial primary >> key), even though that is not what they are searching on? > > "affect". But I think you're right that generally you'll have two indexes. > >> More specifically, does HOT help conditions where a composite comes into >> play (session_id,last_active) ... which would be a more heavily updated >> index than just the primary key. > > Well if you're indexing a column that you're updating then you've already > failed your saving throw.
Just for everyone who missed this. Greg Stark obviously spends his time (or at some time) playing|ed D&D. I have an Epic level Sorcerer, how about you Greg? ;) Sincerely, Joshua D. Drake -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240 Providing the most comprehensive PostgreSQL solutions since 1997 http://www.commandprompt.com/ Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate PostgreSQL Replication: http://www.commandprompt.com/products/ ---------------------------(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