Work towards replacing recursive namespace queries with linear queries.
This commit tracks the path to each namespace, and future work will
replace recursive queries with queries that utilize this new column.

This change adds distinct call to each recursive namespace query to
avoid buggy planning behavior. The change also ensures that resultset is
always in hierarchical order.

alex pooley authored 4 years ago and Alexis Kalderimis committed 4 years ago

Refactor Namespace traversal queries in to their own module. Moved
related specs to a shared context.