Thus spake Marc Grimme
> if I create a table like this:
> CREATE TABLE test (
> id decimal(3) primary key,
> name varchar(32));
>
> how can I ask postgres which is the primary key from table test?
SELECT pg_class.relname, pg_attribute.attname FROM pg_class, pg_attribute, pg_index WHERE pg_class.oid =
pg_attribute.attrelidAND pg_class.oid = pg_index.indrelid AND pg_index.indkey[0] = pg_attribute.attnum AND
pg_index.indisprimary = 't';
That lists all the primary keys in your database. Add a "WHERE pg_class
= 'test'" clause to get the specific table.
Note that this makes the assumption that only one field can be in the
primary key (no complex primary keys) but I don't think there will
ever be more than one the way we declare it now.
--
D'Arcy J.M. Cain <darcy@{druid|vex}.net> | Democracy is three wolves
http://www.druid.net/darcy/ | and a sheep voting on
+1 416 424 2871 (DoD#0082) (eNTP) | what's for dinner.
