Hi,
create table t1 (f1 text not null);
create table t2 (f2 text);
create view v as (select t1.f1, t2.f2 from t1, t2);
Given v, How can a find out the t1.f1 has a not null constraint.
I can easily find this for t1 in the system catalog, but not for v.
I learned on IRC today that this should be somewhere in pg_rewrite but
where exactly and how do I get this information? Parse rewrite
query_tree? How?
--
Greg