Re: Temporary table already exists

On 05 Feb 2014, at 21:19, Mephysto <mephystoonhell(at)gmail(dot)com> wrote:

> ​I posted my last message via Nabble, so I think that the log is not shown in email.
>
>
> I try to repost my log via email:
>
> DEBUG: building index "pg_toast_148085_index" on table "pg_toast_148085"
> CONTEXT: SQL statement "CREATE LOCAL TEMPORARY TABLE deck_types
> ON COMMIT DROP
> AS
> SELECT stored_functions_v0.get_card_deck_types(t1.id_master_card) AS deck_type_ids
> FROM ccg_schema.deck_composition T0
> ,ccg_schema.cards_per_user T1
> WHERE id_deck = p_id_deck
> AND t1.id_owner = l_id_user
> AND t0.id_card = t1.id_card"
> PL/pgSQL function stored_functions_v0.get_deck_types(bigint) line 12 at SQL statement
> STATEMENT: SELECT * FROM stored_functions_v0.get_deck_master_properties($1)
...
> LOG: execute <unnamed>: INSERT INTO admin.logs VALUES ('', '2014-02-05 16:15:13.258', 'it.redevogames.redevolib.classes.PgStoredExecutor', 'DEBUG', $$Executing SELECT * FROM stored_functions_v0.get_deck_master_properties(?)$$, 'PgStoredExecutor.java:215', $$Executing SELECT * FROM stored_functions_v0.get_deck_master_properties(?)
> $$)
> LOG: execute <unnamed>: SELECT * FROM stored_functions_v0.get_deck_master_properties($1)
> DETAIL: parameters: $1 = '1'
> ERROR: relation "deck_types" already exists
> CONTEXT: SQL statement "CREATE LOCAL TEMPORARY TABLE deck_types
> ON COMMIT DROP
> AS
> SELECT stored_functions_v0.get_card_deck_types(t1.id_master_card) AS deck_type_ids
> FROM ccg_schema.deck_composition T0
> ,ccg_schema.cards_per_user T1
> WHERE id_deck = p_id_deck
> AND t1.id_owner = l_id_user
> AND t0.id_card = t1.id_card"
> PL/pgSQL function stored_functions_v0.get_deck_types(bigint) line 12 at SQL statement
> STATEMENT: SELECT * FROM stored_functions_v0.get_deck_master_properties($1)

You aren’t calling that function recursively? Or from multiple parallel threads using the same connection object?

If not, it looks like you’re running some kind of auditing system as well; perhaps that’s accidentally re-executing the function?

You’re almost certainly executing the multiple times in the same session, it’s mostly a matter of figuring out how that happens.

There is also a remote possibility that the temp table hasn’t finished clearing out before another session attempts to create the same table; I seem to recall reading on this list that such was possible in old versions of Postgres. I strongly doubt that though.

Alban Hertroys
--
If you can't see the forest for the trees,
cut the trees and you'll find there is no forest.