remove code only needed for older PostgreSQL/PostGIS versions

lib-sql/indices.sql

@@ -97,8 +97,6 @@ CREATE INDEX IF NOT EXISTS idx_postcode_postcode
 ---
   CREATE INDEX IF NOT EXISTS idx_search_name_centroid
     ON search_name USING GIST (centroid) {{db.tablespace.search_index}};
-
-  {% if postgres.has_index_non_key_column %}
 ---
   CREATE INDEX IF NOT EXISTS idx_placex_housenumber
     ON placex USING btree (parent_place_id)
@@ -109,6 +107,4 @@ CREATE INDEX IF NOT EXISTS idx_postcode_postcode
     ON location_property_osmline USING btree(parent_place_id)
     INCLUDE (startnumber, endnumber) {{db.tablespace.search_index}}
     WHERE startnumber is not null;
-  {% endif %}
-
 {% endif %}

lib-sql/tables.sql

@@ -184,21 +184,21 @@ CREATE INDEX idx_placex_geometry_address_area_candidates ON placex
 
 -- Usage: - POI is within building with housenumber
 CREATE INDEX idx_placex_geometry_buildings ON placex
-  USING {{postgres.spgist_geom}} (geometry) {{db.tablespace.address_index}}
+  USING SPGIST (geometry) {{db.tablespace.address_index}}
   WHERE address is not null and rank_search = 30
         and ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon');
 
 -- Usage: - linking of similar named places to boundaries
 --        - linking of place nodes with same type to boundaries
 CREATE INDEX idx_placex_geometry_placenode ON placex
-  USING {{postgres.spgist_geom}} (geometry) {{db.tablespace.address_index}}
+  USING SPGIST (geometry) {{db.tablespace.address_index}}
   WHERE osm_type = 'N' and rank_search < 26
         and class = 'place' and type != 'postcode';
 
 -- Usage: - is node part of a way?
 --        - find parent of interpolation spatially
 CREATE INDEX idx_placex_geometry_lower_rank_ways ON placex
-  USING {{postgres.spgist_geom}} (geometry) {{db.tablespace.address_index}}
+  USING SPGIST (geometry) {{db.tablespace.address_index}}
   WHERE osm_type = 'W' and rank_search >= 26;
 
 -- Usage: - linking place nodes by wikidata tag to boundaries

lib-sql/tiger_import_finish.sql

@@ -8,9 +8,7 @@
 --index only on parent_place_id
 CREATE INDEX IF NOT EXISTS idx_location_property_tiger_parent_place_id_imp
   ON location_property_tiger_import (parent_place_id)
-{% if postgres.has_index_non_key_column %}
   INCLUDE (startnumber, endnumber, step)
-{% endif %}
   {{db.tablespace.aux_index}};
 CREATE UNIQUE INDEX IF NOT EXISTS idx_location_property_tiger_place_id_imp
   ON location_property_tiger_import (place_id) {{db.tablespace.aux_index}};

src/nominatim_api/core.py

@@ -138,14 +138,12 @@ class NominatimAPIAsync:
                     async with engine.begin() as conn:
                         result = await conn.scalar(sa.text('SHOW server_version_num'))
                         server_version = int(result)
-                        if server_version >= 110000:
                         await conn.execute(sa.text("SET jit_above_cost TO '-1'"))
                         await conn.execute(sa.text(
                                 "SET max_parallel_workers_per_gather TO '0'"))
                 except (PGCORE_ERROR, sa.exc.OperationalError):
                     server_version = 0
 
-                if server_version >= 110000:
                 @sa.event.listens_for(engine.sync_engine, "connect")
                 def _on_connect(dbapi_con: Any, _: Any) -> None:
                     cursor = dbapi_con.cursor()

src/nominatim_db/db/sql_preprocessor.py

@@ -11,7 +11,7 @@ from typing import Set, Dict, Any, cast
 
 import jinja2
 
-from .connection import Connection, server_version_tuple, postgis_version_tuple
+from .connection import Connection
 from ..config import Configuration
 from ..db.query_pool import QueryPool
 
@@ -69,14 +69,7 @@ def _setup_postgresql_features(conn: Connection) -> Dict[str, Any]:
     """ Set up a dictionary with various optional Postgresql/Postgis features that
         depend on the database version.
     """
-    pg_version = server_version_tuple(conn)
+    return {}
-    postgis_version = postgis_version_tuple(conn)
-    pg11plus = pg_version >= (11, 0, 0)
-    ps3 = postgis_version >= (3, 0)
-    return {
-        'has_index_non_key_column': pg11plus,
-        'spgist_geom': 'SPGIST' if pg11plus and ps3 else 'GIST'
-    }
 
 
 class SQLPreprocessor:

src/nominatim_db/tokenizer/icu_tokenizer.py

@@ -17,7 +17,7 @@ from pathlib import Path
 from psycopg.types.json import Jsonb
 from psycopg import sql as pysql
 
-from ..db.connection import connect, Connection, Cursor, server_version_tuple, \
+from ..db.connection import connect, Connection, Cursor, \
                             drop_tables, table_exists, execute_scalar
 from ..config import Configuration
 from ..db.sql_preprocessor import SQLPreprocessor
@@ -110,49 +110,6 @@ class ICUTokenizer(AbstractTokenizer):
                     cur.execute(pysql.SQL('SET max_parallel_workers_per_gather TO {}')
                                      .format(pysql.Literal(min(threads, 6),)))
 
-                if server_version_tuple(conn) < (12, 0):
-                    LOG.info('Computing word frequencies')
-                    drop_tables(conn, 'word_frequencies', 'addressword_frequencies')
-                    cur.execute("""CREATE TEMP TABLE word_frequencies AS
-                                     SELECT unnest(name_vector) as id, count(*)
-                                     FROM search_name GROUP BY id""")
-                    cur.execute('CREATE INDEX ON word_frequencies(id)')
-                    cur.execute("""CREATE TEMP TABLE addressword_frequencies AS
-                                     SELECT unnest(nameaddress_vector) as id, count(*)
-                                     FROM search_name GROUP BY id""")
-                    cur.execute('CREATE INDEX ON addressword_frequencies(id)')
-                    cur.execute("""
-                        CREATE OR REPLACE FUNCTION word_freq_update(wid INTEGER,
-                                                                    INOUT info JSONB)
-                        AS $$
-                        DECLARE rec RECORD;
-                        BEGIN
-                        IF info is null THEN
-                          info = '{}'::jsonb;
-                        END IF;
-                        FOR rec IN SELECT count FROM word_frequencies WHERE id = wid
-                        LOOP
-                          info = info || jsonb_build_object('count', rec.count);
-                        END LOOP;
-                        FOR rec IN SELECT count FROM addressword_frequencies WHERE id = wid
-                        LOOP
-                          info = info || jsonb_build_object('addr_count', rec.count);
-                        END LOOP;
-                        IF info = '{}'::jsonb THEN
-                          info = null;
-                        END IF;
-                        END;
-                        $$ LANGUAGE plpgsql IMMUTABLE;
-                        """)
-                    LOG.info('Update word table with recomputed frequencies')
-                    drop_tables(conn, 'tmp_word')
-                    cur.execute("""CREATE TABLE tmp_word AS
-                                    SELECT word_id, word_token, type, word,
-                                           word_freq_update(word_id, info) as info
-                                    FROM word
-                                """)
-                    drop_tables(conn, 'word_frequencies', 'addressword_frequencies')
-                else:
                 LOG.info('Computing word frequencies')
                 drop_tables(conn, 'word_frequencies')
                 cur.execute("""

src/nominatim_db/tools/check_database.py

@@ -12,7 +12,7 @@ from enum import Enum
 from textwrap import dedent
 
 from ..config import Configuration
-from ..db.connection import connect, Connection, server_version_tuple, \
+from ..db.connection import connect, Connection, \
                             index_exists, table_exists, execute_scalar
 from ..db import properties
 from ..errors import UsageError
@@ -121,9 +121,8 @@ def _get_indexes(conn: Connection) -> List[str]:
     if table_exists(conn, 'search_name'):
         indexes.extend(('idx_search_name_nameaddress_vector',
                         'idx_search_name_name_vector',
-                        'idx_search_name_centroid'))
+                        'idx_search_name_centroid',
-        if server_version_tuple(conn) >= (11, 0, 0):
+                        'idx_placex_housenumber',
-            indexes.extend(('idx_placex_housenumber',
                         'idx_osmline_parent_osm_id_with_hnr'))
 
     # These won't exist if --no-updates import was used

src/nominatim_db/tools/database_import.py

@@ -98,9 +98,6 @@ def setup_database_skeleton(dsn: str, rouser: Optional[str] = None) -> None:
         with conn.cursor() as cur:
             cur.execute('CREATE EXTENSION IF NOT EXISTS hstore')
             cur.execute('CREATE EXTENSION IF NOT EXISTS postgis')
-
-            postgis_version = postgis_version_tuple(conn)
-            if postgis_version[0] >= 3:
             cur.execute('CREATE EXTENSION IF NOT EXISTS postgis_raster')
 
         conn.commit()

src/nominatim_db/tools/refresh.py

@@ -16,8 +16,7 @@ from pathlib import Path
 from psycopg import sql as pysql
 
 from ..config import Configuration
-from ..db.connection import Connection, connect, postgis_version_tuple, \
+from ..db.connection import Connection, connect, drop_tables
-                            drop_tables
 from ..db.utils import execute_file
 from ..db.sql_preprocessor import SQLPreprocessor
 
@@ -190,12 +189,6 @@ def import_secondary_importance(dsn: str, data_path: Path, ignore_errors: bool =
     if not datafile.exists():
         return 1
 
-    with connect(dsn) as conn:
-        postgis_version = postgis_version_tuple(conn)
-        if postgis_version[0] < 3:
-            LOG.error('PostGIS version is too old for using OSM raster data.')
-            return 2
-
     execute_file(dsn, datafile, ignore_errors=ignore_errors)
 
     return 0

src/nominatim_db/tools/replication.py

@@ -18,7 +18,7 @@ import urllib.request as urlrequest
 
 from ..errors import UsageError
 from ..db import status
-from ..db.connection import Connection, connect, server_version_tuple
+from ..db.connection import Connection, connect
 from .exec_utils import run_osm2pgsql
 
 try:
@@ -156,7 +156,7 @@ def run_osm2pgsql_updates(conn: Connection, options: MutableMapping[str, Any]) -
 
     # Consume updates with osm2pgsql.
     options['append'] = True
-    options['disable_jit'] = server_version_tuple(conn) >= (11, 0)
+    options['disable_jit'] = True
     run_osm2pgsql(options)
 
     # Handle deletions