3 Since version 3.7.0 Nominatim offers automatic migrations. Please follow
6 * stop any updates that are potentially running
7 * update Nominatim to the nwer version
8 * goto your project directory and run `nominatim admin --migrate`
9 * (optionally) restart updates
11 Below you find additional migrations and hints about other structural and
15 If you are migrating from a version <3.6, then you still have to follow
16 the manual migration steps up to 3.6.
20 ### New location for data files
22 External data files for Wikipedia importance, postcodes etc. are no longer
23 expected to reside in the source tree by default. Instead they will be searched
24 in the project directory. If you have an automated setup script you must
25 either adapt the download location or explicitly set the location of the
26 files to the old place in your `.env`.
28 ### Introducing `nominatim` command line tool
30 The various php utilities have been replaced with a single `nominatim`
31 command line tool. Make sure to adapt any scripts. There is no direct 1:1
32 matching between the old utilities and the commands of nominatim CLI. The
33 following list gives you a list of nominatim sub-commands that contain
34 functionality of each script:
36 * ./utils/setup.php: `import`, `freeze`, `refresh`
37 * ./utils/update.php: `replication`, `add-data`, `index`, `refresh`
38 * ./utils/specialphrases.php: `special-phrases`
39 * ./utils/check_import_finished.php: `admin`
40 * ./utils/warm.php: `admin`
41 * ./utils/export.php: `export`
43 Try `nominatim <command> --help` for more information about each subcommand.
45 `./utils/query.php` no longer exists in its old form. `nominatim search`
46 provides a replacement but returns different output.
50 ### Change of layout of search_name_* tables
52 The table need a different index for nearest place lookup. Recreate the
53 indexes using the following shell script:
56 for table in `psql -d nominatim -c "SELECT tablename FROM pg_tables WHERE tablename LIKE 'search_name_%'" -tA | grep -v search_name_blank`;
58 psql -d nominatim -c "DROP INDEX idx_${table}_centroid_place; CREATE INDEX idx_${table}_centroid_place ON ${table} USING gist (centroid) WHERE ((address_rank >= 2) AND (address_rank <= 25)); DROP INDEX idx_${table}_centroid_street; CREATE INDEX idx_${table}_centroid_street ON ${table} USING gist (centroid) WHERE ((address_rank >= 26) AND (address_rank <= 27))";
62 ### Removal of html output
64 The debugging UI is no longer directly provided with Nominatim. Instead we
65 now provide a simple Javascript application. Please refer to
66 [Setting up the Nominatim UI](../Setup-Nominatim-UI) for details on how to
69 The icons served together with the API responses have been moved to the
70 nominatim-ui project as well. If you want to keep the `icon` field in the
71 response, you need to set `CONST_MapIcon_URL` to the URL of the `/mapicon`
72 directory of nominatim-ui.
74 ### Change order during indexing
76 When reindexing places during updates, there is now a different order used
77 which needs a different database index. Create it with the following SQL command:
80 CREATE INDEX idx_placex_pendingsector_rank_address
82 USING BTREE (rank_address, geometry_sector)
83 WHERE indexed_status > 0;
86 You can then drop the old index with:
89 DROP INDEX idx_placex_pendingsector;
94 This index has been unused ever since the query using it was changed two years ago. Saves about 12GB on a planet installation.
97 DROP INDEX idx_placex_geometry_reverse_lookupPoint;
100 ### Switching to dotenv
102 As part of the work changing the configuration format, the configuration for
103 the website is now using a separate configuration file. To create the
104 configuration file, run the following command after updating:
107 ./utils/setup.php --setup-website
112 ### New Wikipedia/Wikidata importance tables
114 The `wikipedia_*` tables have a new format that also includes references to
115 Wikidata. You need to update the computation functions and the tables as
118 * download the new Wikipedia tables as described in the import section
119 * reimport the tables: `./utils/setup.php --import-wikipedia-articles`
120 * update the functions: `./utils/setup.php --create-functions --enable-diff-updates`
121 * create a new lookup index:
123 CREATE INDEX idx_placex_wikidata
125 USING BTREE ((extratags -> 'wikidata'))
126 WHERE extratags ? 'wikidata'
129 AND rank_search < 26;
131 * compute importance: `./utils/update.php --recompute-importance`
133 The last step takes about 10 hours on the full planet.
135 Remove one function (it will be recreated in the next step):
138 DROP FUNCTION create_country(hstore,character varying);
141 Finally, update all SQL functions:
144 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
149 ### Reorganisation of location_area_country table
151 The table `location_area_country` has been optimized. You need to switch to the
152 new format when you run updates. While updates are disabled, run the following
156 CREATE TABLE location_area_country_new AS
157 SELECT place_id, country_code, geometry FROM location_area_country;
158 DROP TABLE location_area_country;
159 ALTER TABLE location_area_country_new RENAME TO location_area_country;
160 CREATE INDEX idx_location_area_country_geometry ON location_area_country USING GIST (geometry);
161 CREATE INDEX idx_location_area_country_place_id ON location_area_country USING BTREE (place_id);
164 Finally, update all SQL functions:
167 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
172 ### New database connection string (DSN) format
174 Previously database connection setting (`CONST_Database_DSN` in `settings/*.php`) had the format
176 * (simple) `pgsql://@/nominatim`
177 * (complex) `pgsql://johndoe:secret@machine1.domain.com:1234/db1`
181 * (simple) `pgsql:dbname=nominatim`
182 * (complex) `pgsql:dbname=db1;host=machine1.domain.com;port=1234;user=johndoe;password=secret`
184 ### Natural Earth country boundaries no longer needed as fallback
187 DROP TABLE country_naturalearthdata;
190 Finally, update all SQL functions:
193 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
196 ### Configurable Address Levels
198 The new configurable address levels require a new table. Create it with the
202 ./utils/update.php --update-address-levels
207 ### New reverse algorithm
209 The reverse algorithm has changed and requires new indexes. Run the following
210 SQL statements to create the indexes:
213 CREATE INDEX idx_placex_geometry_reverse_lookupPoint
215 USING gist (geometry)
216 WHERE (name IS NOT null or housenumber IS NOT null or rank_address BETWEEN 26 AND 27)
217 AND class NOT IN ('railway','tunnel','bridge','man_made')
218 AND rank_address >= 26
219 AND indexed_status = 0
220 AND linked_place_id IS null;
221 CREATE INDEX idx_placex_geometry_reverse_lookupPolygon
222 ON placex USING gist (geometry)
223 WHERE St_GeometryType(geometry) in ('ST_Polygon', 'ST_MultiPolygon')
224 AND rank_address between 4 and 25
225 AND type != 'postcode'
227 AND indexed_status = 0
228 AND linked_place_id is null;
229 CREATE INDEX idx_placex_geometry_reverse_placeNode
230 ON placex USING gist (geometry)
232 AND rank_search between 5 and 25
234 AND type != 'postcode'
236 AND indexed_status = 0
237 AND linked_place_id is null;
240 You also need to grant the website user access to the `country_osm_grid` table:
243 GRANT SELECT ON table country_osm_grid to "www-user";
246 Replace the `www-user` with the user name of your website server if necessary.
248 You can now drop the unused indexes:
251 DROP INDEX idx_placex_reverse_geometry;
254 Finally, update all SQL functions:
257 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
264 A new separate table for artificially computed postcode centroids was introduced.
265 Migration to the new format is possible but **not recommended**.
267 Create postcode table and indexes, running the following SQL statements:
270 CREATE TABLE location_postcode
271 (place_id BIGINT, parent_place_id BIGINT, rank_search SMALLINT,
272 rank_address SMALLINT, indexed_status SMALLINT, indexed_date TIMESTAMP,
273 country_code varchar(2), postcode TEXT,
274 geometry GEOMETRY(Geometry, 4326));
275 CREATE INDEX idx_postcode_geometry ON location_postcode USING GIST (geometry);
276 CREATE UNIQUE INDEX idx_postcode_id ON location_postcode USING BTREE (place_id);
277 CREATE INDEX idx_postcode_postcode ON location_postcode USING BTREE (postcode);
278 GRANT SELECT ON location_postcode TO "www-data";
279 DROP TYPE IF EXISTS nearfeaturecentr CASCADE;
280 CREATE TYPE nearfeaturecentr AS (
283 rank_address smallint,
284 rank_search smallint,
292 Add postcode column to `location_area` tables with SQL statement:
295 ALTER TABLE location_area ADD COLUMN postcode TEXT;
298 Then reimport the functions:
301 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
304 Create appropriate triggers with SQL:
307 CREATE TRIGGER location_postcode_before_update BEFORE UPDATE ON location_postcode
308 FOR EACH ROW EXECUTE PROCEDURE postcode_update();
311 Finally populate the postcode table (will take a while):
314 ./utils/setup.php --calculate-postcodes --index --index-noanalyse
317 This will create a working database. You may also delete the old artificial
318 postcodes now. Note that this may be expensive and is not absolutely necessary.
319 The following SQL statement will remove them:
322 DELETE FROM place_addressline a USING placex p
323 WHERE a.address_place_id = p.place_id and p.osm_type = 'P';
324 ALTER TABLE placex DISABLE TRIGGER USER;
325 DELETE FROM placex WHERE osm_type = 'P';
326 ALTER TABLE placex ENABLE TRIGGER USER;