2009/8/31 André Pignata <[email protected]>
>
> CREATE OR REPLACE FUNCTION "migracao"."limpa_tabela" () RETURNS boolean AS
> $body$
> /* New function body */
> declare
> rmsg record;
> retorno boolean;
> begin
> retorno := true;
> for rmsg in (select distinct pg_tables.tablename as tabela from
> pg_tables
> ,pg_class
> ,pg_namespace
> where
> pg_namespace.nspname = 'public'
> and pg_tables.schemaname = pg_namespace.nspname
> and pg_class.relname = pg_tables.tablename
> and pg_class.relnamespace = pg_namespace.oid
> ) loop
> BEGIN
> EXECUTE('delete from '||rmsg.tabela);
> EXCEPTION
> when integrity_constraint_violation then
> retorno := false;
>
> end;
> end loop;
> return retorno;
>
> end;
> $body$
> LANGUAGE 'plpgsql' VOLATILE RETURNS NULL ON NULL INPUT SECURITY INVOKER;
>
> <corte>
>
>
André,
Só uma dica, eu recomendo você utilizar o "information_schema" [1] para
obter informações do catálogo, trocando a query...
select distinct pg_tables.tablename as tabela from
pg_tables
,pg_class
,pg_namespace
where
pg_namespace.nspname = 'public'
and pg_tables.schemaname = pg_namespace.nspname
and pg_class.relname = pg_tables.tablename
and pg_class.relnamespace = pg_namespace.oid
...por simplesmente:
select table_name as tabela
from information_schema.tables
where table_schema = 'public';
[1] http://www.postgresql.org/docs/current/static/information-schema.html
--
Fabrízio de Royes Mello
>> Blog sobre TI: http://fabriziomello.blogspot.com
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