Right at the moment, ALTER INHERIT doesn't verify that collations match
in a proposed inheritance child. So you can do this:
regression=# create table foo (f1 text collate "C");
CREATE TABLE
regression=# create table bar (f1 text collate "POSIX");
CREATE TABLE
regression=# alter table bar inherit foo;
ALTER TABLE
but then the planner whines about it:
regression=# select * from foo;
ERROR: attribute "f1" of relation "bar" does not match parent's collation
Does anyone think it's not a bug that ALTER TABLE lets this through?
If so, what do you think the querying semantics ought to be?
regards, tom lane
