Re: Running update in chunks? - Mailing list pgsql-general

From Tim Uckun
Subject Re: Running update in chunks?
Date
Msg-id CAGuHJrPQMByo86ney5KbyiJ2RNyrvH_sGeXikP=-ZU23krPd1Q@mail.gmail.com
Whole thread Raw
In response to Re: Running update in chunks?  ("Kevin Grittner" <kgrittn@mail.com>)
List pgsql-general
> I agree that seems like the most likely cause. Each update to the
> row holding the hstore column requires adding new index entries for
> all the hstore elements, and autovacuum will need to clean up the
> old ones in the background. The best solution would be to either
> normalize the data instead of using hstore, or move the hstore to a
> separate table which is referenced by some sort of ID from the
> frequently-updated table.


That's very interesting. I can certainly split up the table, no big
deal there.  So would the index be redone even if I am not updating
the hstore field itself?


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