Erwin Moller, 18.11.2008 15:47:
Suppose I want to delete a record in tblnr1.
Does Postgres has some command/procedure/function to list tables that
have FK constraints on that table (tblnr1)
That could be resolved with a query against the INFORMATION_SCHEMA
Something like
SELECT c.table_name || ' references ' || tu.table_name
FROM information_schema.table_constraints c
JOIN information_schema.constraint_table_usage tu
ON (c.constraint_name = tu.constraint_name AND c.table_schema = tu.table_schema)
WHERE c.constraint_type = 'FOREIGN KEY';
and lists also the tables that have a FK constraint on tables that have
a FK constraint on the first? etc.
So I would like some kind of FK 'walker'.
That would be your front-end that displays that (or some nested self-join using the above statement)
Regards
Thomas
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