The following bug has been logged online: Bug reference: 2223 Logged by: Email address: [EMAIL PROTECTED] PostgreSQL version: 8.1 Operating system: linux Description: Misleading info in docs on volatility level of functions Details:
Hi, all! The documentation on how to and why declare a function STABLE or IMMUTABLE is very laconic. It makes clear what promises I make when determining the volatility of my functions but it fails to point out what exactly I can expect in turn for my promises. See also the discussion on bug#2150 on the pgsql-bugs list. Thanks for bothering. ---------------------------(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