Andreas wrote: > can I habe multi table indices to ensure that certain IDs can only > appear in on relation? > > Like > > table_0(id int), table_1(id int), table_2(id int) > rel_1_to_0( id_1 int, id_0 int ) > rel_2_to_0( id_2 int, id_0 int ) > > An id of table_0 should only exist either in rel_1_to_0 OR rel_2_to_0. You cannot have one index across several tables. > How can I do this? Perhaps with a trigger that checks if the condition is satisfied. Yours, Laurenz Albe -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
