Looks like 2af82975cd
accidentally renamed an index. Because of the added "if not
exists" clause, the index doesn't get created. This
significantly slows down reverse queries because they now
require full scans on location_property_tiger.
Without this fix, reverse queries can take 8s on a full
planet install on an r5.8xlarge instance in EC2.
On Postgresql versions 11+ add an index to speed up the lookup
of housenumbers for terms found in search_name. This is really
just a band-aid around the query planer's interpretation of the
query.
Also switches to jinja-based preprocessing, which allows to
simplify the SQL files. Use 'if not exists' where possible
so that the step can be rerun to fix missing indexes.
Replaces various hand-crafted replacements of varying format with
a single Jinja2 templating mechanism. Allows full access to
configuration if necessary.
