Mercurial > gemma
view schema/updates/1405/01.add_fm_validity.sql @ 5030:737d7859dd86
Store fairway dimensions as MultiPolygon
This avoids storing a single invalid geometry from the data source
as multiple valid geometries with duplicate attribute sets.
The previous behaviour was not correctly handled in import tracking,
because only the ID of the first item in a set of multiple geometries
generated from a single entry from the data source was tracked.
author | Tom Gottfried <tom@intevation.de> |
---|---|
date | Wed, 18 Mar 2020 18:42:30 +0100 |
parents | 7cc79c65a9e5 |
children |
line wrap: on
line source
CREATE TABLE waterway.fairway_marks_new ( validity tstzrange NOT NULL DEFAULT tstzrange(current_timestamp, NULL) CHECK (NOT isempty(validity)), last_found timestamp with time zone NOT NULL DEFAULT current_timestamp, LIKE waterway.fairway_marks ); DO LANGUAGE plpgsql $$ DECLARE table_suffix varchar; BEGIN /* Re-write tables inheriting from fairway_marks to include new columns in correct position */ FOREACH table_suffix IN ARRAY ARRAY[ 'bcnlat', 'boycar', 'boylat', 'boysaw', 'boyspp', 'daymar', 'lights', 'rtpbcn', 'topmar', 'notmrk'] LOOP EXECUTE format('CREATE TABLE waterway.fairway_marks_%s_new ' '(LIKE waterway.fairway_marks_%1$s INCLUDING ALL) ' 'INHERITS (waterway.fairway_marks_new)', table_suffix); /* Drop index referring to wrong columns. See https://www.postgresql.org/message-id/flat/16272-6e32da020e9a9381%40postgresql.org */ EXECUTE format('DROP INDEX waterway.fairway_marks_%s_new_row_idx', table_suffix); EXECUTE format('INSERT INTO waterway.fairway_marks_%s_new ' 'SELECT tstzrange(current_timestamp, NULL), current_timestamp, * ' 'FROM waterway.fairway_marks_%1$s', table_suffix); EXECUTE format('DROP TABLE waterway.fairway_marks_%s CASCADE', table_suffix); EXECUTE format('ALTER TABLE waterway.fairway_marks_%s_new ' 'RENAME TO fairway_marks_%1$s', table_suffix); END LOOP; /* Recreate foreign key constraints */ FOREACH table_suffix IN ARRAY ARRAY['bcnlat', 'daymar', 'notmrk'] LOOP EXECUTE format('ALTER TABLE waterway.fairway_marks_%1$s_dirimps ' 'ADD FOREIGN KEY (fm_%1$s_id) ' 'REFERENCES waterway.fairway_marks_%1$s', table_suffix); END LOOP; END; $$; DROP TABLE waterway.fairway_marks; ALTER TABLE waterway.fairway_marks_new RENAME TO fairway_marks; -- Restore GRANTs GRANT SELECT on ALL tables in schema waterway TO waterway_user ; GRANT INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA waterway TO waterway_admin;