Thanks,
my version is 8.4. The table contains strings but are not too long...under
100char.
Thanks,
Rob
________________________________
Von: Greg Williamson <gwilliamso...@yahoo.com>
An: Robert Buckley <robertdbuck...@yahoo.com>;
"postgis-users@postgis.refractions.net"
<postgis-users@postgis.refractions.net>; PostGIS Users Discussion
<postgis-users@postgis.refractions.net>
Gesendet: 21:19 Donnerstag, 22.September 2011
Betreff: Re: [postgis-users] where did pg_toast,pg_toast_temp1 come from?
Rob --
>Hi,
>
>
>when I left work today these pg_toast tables were not in my database. when I
>looked later ther were.
>
>
>Can anyone tell me where they came from and why they are automatically created
>in every database?
>
You don't state what version of postgres this happens on, but in general TOAST
tables are created by the system to hold long compressed values (typically text
aka varlena tables). I think you can turn this facility off, but in general
postgres will try to take very long strings, for example, and compress them,
putting them into a toast table to that the row size of the original table
doesn't grow excessively. See, for example,
<http://www.postgresql.org/docs/9.0/interactive/storage-toast.html>
So I suspect what happened is that someone entered some long text values and
postgres created the toast tables to handle these long strings.
HTH,
Greg Williamson
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