Thanks to visit codestin.com
Credit goes to postgrespro.com

Re: Much Ado About COUNT(*) - Mailing list pgsql-hackers

From Greg Stark
Subject Re: Much Ado About COUNT(*)
Date
Msg-id [email protected]
Whole thread Raw
In response to Re: Much Ado About COUNT(*)  (Jeff Davis <[email protected]>)
Responses Re: Much Ado About COUNT(*)
List pgsql-hackers
Jeff Davis <[email protected]> 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



pgsql-hackers by date:

Previous
From: Jeff Davis
Date:
Subject: Re: Much Ado About COUNT(*)
Next
From: Tom Lane
Date:
Subject: Re: Much Ado About COUNT(*)