Hello pgsql-general,
I'd like to set up a foreign key constraint to a foreign table from a local table.
ie, I have a column in a local table that I'd like to ensure has a value in the foreign table.
alter mytable
add column some_column_id uuid references myforeigntable(some_column_id)
;
Unfortunately I get a "not a table" error when I try this.
ERROR: referenced relation "myforeigntable" is not a table
I'm thinking I'll have to write a function that checks for existance of the ids in the foreign table, and then put a CHECK constraint on using that function, but I thought I'd as first if there was a better way.
Thanks.
--
Rick Otten
