Re: Much Ado About COUNT(*)
Greg Stark <gsstark@mit.edu>
From: Greg Stark <gsstark@mit.edu>
To: pgsql-hackers@postgresql.org
Date: 2005-01-13T03:19:18Z
Lists: pgsql-hackers
Jeff Davis <jdavis-pgsql@empires.org> writes: > But of course, we all love toast. Everyone needs to make those wide > tables once in a while, and toast does a great job of taking those > worries away in an efficient way. I am just saying that hopefully we > don't have to seqscan a table with wide tuples very often :) I thought toast only handled having individual large columns. So if I have a 2kb text column it'll pull that out of the table for me. But if I have 20 columns each of which have 100 bytes will it still help me? Will it kick in if I define a single column which stores a record type with 20 columns each of which have a 100 byte string? -- greg