I'm updating the information schema for SQL:2003. I'm having some
difficulties with the "sequences" view. It should look approximately
like this (uninteresting stuff omitted):
CREATE VIEW sequences AS
SELECT CAST(current_database() AS sql_identifier) AS sequence_catalog,
CAST(nc.nspname AS sql_identifier) AS sequence_schema,
CAST(c.relname AS sql_identifier) AS sequence_name,
CAST(null AS cardinal_number) AS maximum_value, -- FIXME
CAST(null AS cardinal_number) AS minimum_value, -- FIXME
CAST(null AS cardinal_number) AS increment, -- FIXME
CAST(null AS character_data) AS cycle_option -- FIXME
FROM pg_namespace nc, pg_class c
WHERE c.relnamespace = nc.oid
AND c.relkind = 's';
How does one get at the missing fields. The only way I know is
selecting from the sequence, but how does one work this into this
query? Somehow it seems that these things should be stored in a real
system catalog.
Ideas (short of using PERFORM in PL/pgSQL)?
--
Peter Eisentraut
http://developer.postgresql.org/~petere/
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TIP 9: In versions below 8.0, the planner will ignore your desire to
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