Обсуждение: SEQUENCES

On Mon, Oct 02, 2006 at 01:39:38PM -0300, Rodrigo Sakai wrote:
> 
>   I need to get all sequences and their respective current values! Is there
> any catalog table or any other away to get this???

Here's a quick way to do it in a shell script, although it'd be sort
of inefficient:

for name in `psql -c "select relname from pg_class where relkind =
'S'" dbname; do psql -c "select last_value from $name" dbname; done.

A


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Rodrigo Sakai wrote on 02.10.2006 18:39:
>   Hi all,
> 
>  
> 
>   I need to get all sequences and their respective current values! Is there
> any catalog table or any other away to get this???
> 
>  

Quote from the manual at:
http://www.postgresql.org/docs/8.1/static/catalog-pg-class.html

"The catalog pg_class catalogs tables and most everything else that has columns 
or is otherwise similar to a table. This includes indexes (but see also 
pg_index), sequences, views, composite types"

Thomas

On Mon, Oct 02, 2006 at 13:39:38 -0300, Rodrigo Sakai <rodrigo.sakai@zanthus.com.br> wrote:
>   Hi all,
> 
>  
> 
>   I need to get all sequences and their respective current values! Is there
> any catalog table or any other away to get this???

You can get their names from pg_class (with relkind = 'S') and then iterate
over the names and look at the table underlying each table (at last_value).