Nominatim/sql/partition-tables.src.sql
Sarah Hoffmann 79b81d39d8 streamline indexes of search_name partition tables
Remove index on name_vector. We always do near search where the
geometry index is sufficient. Also split centroid index in low
and high rank indexes. Reduces index size by about 25%.
2019-07-28 13:29:35 +02:00

59 lines
2.1 KiB
SQL

drop type if exists nearplace cascade;
create type nearplace as (
place_id BIGINT
);
drop type if exists nearfeature cascade;
create type nearfeature as (
place_id BIGINT,
keywords int[],
rank_address smallint,
rank_search smallint,
distance float,
isguess boolean
);
drop type if exists nearfeaturecentr cascade;
create type nearfeaturecentr as (
place_id BIGINT,
keywords int[],
rank_address smallint,
rank_search smallint,
distance float,
isguess boolean,
postcode TEXT,
centroid GEOMETRY
);
drop table IF EXISTS search_name_blank CASCADE;
CREATE TABLE search_name_blank (
place_id BIGINT,
search_rank smallint,
address_rank smallint,
name_vector integer[],
centroid GEOMETRY(Geometry, 4326)
);
-- start
CREATE TABLE location_area_large_-partition- () INHERITS (location_area_large) {ts:address-data};
CREATE INDEX idx_location_area_large_-partition-_place_id ON location_area_large_-partition- USING BTREE (place_id) {ts:address-index};
CREATE INDEX idx_location_area_large_-partition-_geometry ON location_area_large_-partition- USING GIST (geometry) {ts:address-index};
CREATE TABLE search_name_-partition- () INHERITS (search_name_blank) {ts:address-data};
CREATE INDEX idx_search_name_-partition-_place_id ON search_name_-partition- USING BTREE (place_id) {ts:address-index};
CREATE INDEX idx_search_name_-partition-_centroid_street ON search_name_-partition- USING GIST (centroid) {ts:address-index} where search_rank between 26 and 27;
CREATE INDEX idx_search_name_-partition-_centroid_place ON search_name_-partition- USING GIST (centroid) {ts:address-index} where search_rank between 2 and 25;
DROP TABLE IF EXISTS location_road_-partition-;
CREATE TABLE location_road_-partition- (
place_id BIGINT,
partition SMALLINT,
country_code VARCHAR(2),
geometry GEOMETRY(Geometry, 4326)
) {ts:address-data};
CREATE INDEX idx_location_road_-partition-_geometry ON location_road_-partition- USING GIST (geometry) {ts:address-index};
CREATE INDEX idx_location_road_-partition-_place_id ON location_road_-partition- USING BTREE (place_id) {ts:address-index};
-- end