This is part of the ongoing effort to simplify the metadata tables and
removing any triggers on them that cause side effects.
This change includes the following:
- Remove the on_change_hypertable() trigger on the hypertable catalog
table.
- Remove the TRUNCATE blocking triggers on all metadata tables. If
we think such blocking is important, we should do this in an
event trigger or the processUtility hook.
- Put all SQL files in a single load_order.txt instead of splitting
across three distinct files. Now all SQL files are included in
update scripts as well for simplicity and consistency.
- As a result of removing triggers and related functions, the
setup_main() and restore_timescaledb() functions are no longer
needed. This also further simplifies the database restore process
as calling restore_timescaledb() is no longer needed (or possible).
- Refactor create_hypertable_row() to do more validation before
allocating a new hypertable ID. This avoids incrementing the serial
ID unnecessarily in case some validations fail.
040e815dba