6457419e0d
I would like to reformat all of our SQL to have a concise coding style. This makes it far easier to understand the code for a casual contributor, and lets us spot errors more easily. Most importantly, it makes it much easier to grep (search) the code because it is more likely to be in the same syntax Some key changes: * SQL keywords are always UPPERCASE, e.g. `SELECT WHEN AS END ...` * types, variables, aliases, and field names (identifiers) are always lower case * `LANGUAGE 'plpgsql'` is now `LANGUAGE plpgsql` (no quotes) * a few minor spacing/semicolon cleanups P.S. Per @TomPohys request, `TABLE` is spelled using upper case despite being a type for consistency with PG Docs. Same for `LANGUAGE SQL` vs `LANGUAGE plpgsql`.
92 lines
2.5 KiB
PL/PgSQL
92 lines
2.5 KiB
PL/PgSQL
DROP TRIGGER IF EXISTS trigger_delete_line ON osm_water_polygon;
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DROP TRIGGER IF EXISTS trigger_update_line ON osm_water_polygon;
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DROP TRIGGER IF EXISTS trigger_insert_line ON osm_water_polygon;
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CREATE OR REPLACE VIEW osm_water_lakeline_view AS
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SELECT wp.osm_id,
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ll.wkb_geometry AS geometry,
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name,
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name_en,
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name_de,
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update_tags(tags, ll.wkb_geometry) AS tags,
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ST_Area(wp.geometry) AS area,
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is_intermittent
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FROM osm_water_polygon AS wp
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INNER JOIN lake_centerline ll ON wp.osm_id = ll.osm_id
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WHERE wp.name <> ''
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AND ST_IsValid(wp.geometry);
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-- etldoc: osm_water_polygon -> osm_water_lakeline
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-- etldoc: lake_centerline -> osm_water_lakeline
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CREATE TABLE IF NOT EXISTS osm_water_lakeline AS
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SELECT *
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FROM osm_water_lakeline_view;
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DO
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$$
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BEGIN
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ALTER TABLE osm_water_lakeline
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ADD CONSTRAINT osm_water_lakeline_pk PRIMARY KEY (osm_id);
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EXCEPTION
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WHEN OTHERS THEN
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RAISE NOTICE 'primary key osm_water_lakeline_pk already exists in osm_water_lakeline.';
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END;
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$$;
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CREATE INDEX IF NOT EXISTS osm_water_lakeline_geometry_idx ON osm_water_lakeline USING gist (geometry);
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-- Handle updates
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CREATE SCHEMA IF NOT EXISTS water_lakeline;
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CREATE OR REPLACE FUNCTION water_lakeline.delete() RETURNS trigger AS
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$$
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BEGIN
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DELETE
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FROM osm_water_lakeline
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WHERE osm_water_lakeline.osm_id = OLD.osm_id;
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RETURN NULL;
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION water_lakeline.update() RETURNS trigger AS
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$$
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BEGIN
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UPDATE osm_water_lakeline
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SET (osm_id, geometry, name, name_en, name_de, tags, area, is_intermittent) =
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(SELECT * FROM osm_water_lakeline_view WHERE osm_water_lakeline_view.osm_id = NEW.osm_id)
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WHERE osm_water_lakeline.osm_id = NEW.osm_id;
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RETURN NULL;
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION water_lakeline.insert() RETURNS trigger AS
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$$
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BEGIN
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INSERT INTO osm_water_lakeline
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SELECT *
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FROM osm_water_lakeline_view
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WHERE osm_water_lakeline_view.osm_id = NEW.osm_id;
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RETURN NULL;
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END;
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$$ LANGUAGE plpgsql;
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CREATE TRIGGER trigger_delete_line
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AFTER DELETE
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ON osm_water_polygon
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FOR EACH ROW
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EXECUTE PROCEDURE water_lakeline.delete();
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CREATE TRIGGER trigger_update_line
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AFTER UPDATE
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ON osm_water_polygon
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FOR EACH ROW
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EXECUTE PROCEDURE water_lakeline.update();
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CREATE TRIGGER trigger_insert_line
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AFTER INSERT
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ON osm_water_polygon
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FOR EACH ROW
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EXECUTE PROCEDURE water_lakeline.insert();
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