Fix issues with describe queries of extended statistics in psql
This addresses some problems in the describe queries used for extended
statistics:
- Two schema qualifications for the text type were missing for \dX.
- The list of extended statistics listed for a table through \d was
ordered based on the object OIDs, but it is more consistent with the
other commands to order by namespace and then by object name.
- A couple of aliases were not used in \d. These are removed.
This is similar to commits
1f092a3 and
07f8a9e.
Author: Justin Pryzby
Discussion: https://postgr.es/m/
20220107022235.GA14051@telsasoft.com
Backpatch-through: 14