Actions
- Table of contents
- Exports
- Add update trigger for modified field
- Reset Demo
- Find used but missing places
- Delete orphaned locations
- Import database to Windows
- Recursive Events
Below are some unsorted database related code snippets used in development.
Exports¶
Database Structure¶
Export the database structure from the test database (used to avoid specialties in production databases) into install/1_structure.sql
pg_dump -sc --if-exists -n model -n gis -n log -n web -n import openatlas_test > install/1_structure.sql
Model Data¶
pg_dump openatlas --inserts -a -t model.class -t model.class_i18n -t model.class_inheritance -t model.property -t model.property_i18n -t model.property_inheritance > install/3_data_model.sql
Single Schema¶
pg_dump -n web openatlas > /tmp/openatlas_web.sql pg_dump -n model openatlas > /tmp/openatlas_web.sql
Add update trigger for modified field¶
Replace schema.table and execute:
CREATE TRIGGER update_modified BEFORE UPDATE ON schema.table FOR EACH ROW EXECUTE PROCEDURE model.update_modified();
Reset Demo¶
/var/lib/postgresql/reset_demo.sh
Find used but missing places¶
e.g. after a case study separation (not sure if this statement is now showing really missing or just needed locations)
SELECT e.id, e.name, e.system_type FROM model.entity e
WHERE e.class_code = 'E53' AND e.system_type = 'place location' AND e.id IN (
SELECT r.id FROM model.link lr JOIN model.entity r ON lr.range_id = r.id AND lr.property_code IN ('P74', 'OA8', 'OA9', 'P7'))
AND e.id NOT IN (SELECT range_id FROM model.link WHERE property_code = 'P53');
Delete orphaned locations¶
DELETE FROM model.entity WHERE id IN (
SELECT id FROM model.entity WHERE system_type = 'place location' AND id NOT IN (
SELECT e.id FROM model.entity e JOIN model.link l ON e.id = l.range_id AND l.property_code = 'P53'
WHERE e.class_code = 'E53' AND e.system_type = 'place location'));
Import database to Windows¶
Make a dump with inserts
pg_dump --attribute-inserts openatlas > openatlas.sql
In the pgadmin tool, select the corresponding database, run the query tool and select the open file option.
Load the provided dump file and execute (F5) it.
Login and adapt user as needed.
Recursive Events¶
To get all child events of a given event the SQL below (replace ROOT_EVENT_ID at bottom). It works but is slow and could be improved.
WITH RECURSIVE tree AS (
SELECT e.id, ARRAY[]::INTEGER[] AS ancestors
FROM model.entity e
WHERE (SELECT s.id FROM model.entity s JOIN model.link l ON s.id = l.range_id AND l.domain_id = e.id AND l.property_id = (SELECT id FROM model.property WHERE code = 'P117')) IS NULL
UNION ALL
SELECT e.id, tree.ancestors ||
(SELECT s.id FROM model.entity s JOIN model.link l ON s.id = l.range_id AND l.domain_id = e.id AND l.property_id = (SELECT id FROM model.property WHERE code = 'P117'))
FROM model.entity e, tree
WHERE (SELECT s.id FROM model.entity s JOIN model.link l ON s.id = l.range_id AND l.domain_id = e.id AND l.property_id = (SELECT id FROM model.property WHERE code = 'P117')) = tree.id
)
SELECT * FROM tree WHERE ROOT_EVENT_ID = ANY(tree.ancestors);
Updated by Alexander Watzinger 3 months ago · 61 revisions