Add bool created to return value of create_hypertable and add_dimension.
When if_not_exists is true and creation is skipped because the object
already exists created will be false, otherwise it will be true. This
modifies the functions to return meta data even when no object was
created.
Change create_hypertable to return a record consisting of
(hypertable_id, schema_name, table_name). This improves user feedback
about success of the operation but also gives the function an API
returning useful information for non-human consumption.
This commit moves a lot of test setup logic to runner.sh. Also
passes the right commands to the regression infrastructure to create
appropriate users and run tests as a regular user.
All regression tests will now use a non-superuser unless superuser is
necessary. This PR is a meant to prevent things like issue #226.
This PR also fixes some more permission bugs found during this testing.
Constraints on regular PostgreSQL tables need to be validatated so
that they don't have a foreign key constraint that references a
hypertable, as this is not yet supported. This change fixes a bug in
this validation caused by not checking for the proper node types when
parsing a CreateStmt node. The CreateStmt is now also parsed in the
DDL end hook, instead of the processUtility hook, which ensures that
the CreateStmt node has been run through parse analysis. The parse
analysis changes the contents of the node to be more consistent across
different CREATE statements. For instance, a CREATE LIKE statement
will look more similar to a regular CREATE statement after parse
analysis.
