Renames these scripts to `postgrest-with-pg-xx`. The renaming
helps reduce the length of temporary filenames. This is needed
to ensure that socket file names remain under the maximum
allowed length of 107 chars.
Closes#4461.
Signed-off-by: Taimoor Zaeem <taimoorzaeem@gmail.com>
Only add m2m relationship based on real junctions:
a table has FKs to two other tables and the FK columns
are part of the PK columns.
Also add some stats to big_schema.sql