"Mark Woodward" <[EMAIL PROTECTED]> writes: > PostgreSQL promptly uses all available memory for the query and > subsequently crashes.
I'll bet a nickel this is on a Linux machine with OOM kill enabled. What does the postmaster log show --- or look in the kernel log to see if it mentions anything about an out-of-memory kill. > freedb=# create table ucode as select distinct ucode from cdtitles group > by ucode having count(ucode)>1 ; > server closed the connection unexpectedly What does EXPLAIN show as the plan for that? If it's a hash aggregate, try with "enable_hashagg" turned off. How many distinct ucode values are there in the table? regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster