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54 lines
1.9 KiB
PL/PgSQL
54 lines
1.9 KiB
PL/PgSQL
ALTER TABLE hdb_catalog.event_triggers
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DROP CONSTRAINT IF EXISTS event_triggers_schema_name_fkey;
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ALTER TABLE hdb_catalog.event_triggers
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DROP CONSTRAINT IF EXISTS event_triggers_schema_name_table_name_fkey;
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-- since we removed the foreign key constraint with hdb_catalog.hdb_table which had 'ON UPDATE CASCADE',
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-- we perform the update using trigger
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CREATE OR REPLACE FUNCTION hdb_catalog.event_trigger_table_name_update()
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RETURNS TRIGGER
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LANGUAGE PLPGSQL
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AS
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$$
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BEGIN
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IF (NEW.table_schema, NEW.table_name) <> (OLD.table_schema, OLD.table_name) THEN
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UPDATE hdb_catalog.event_triggers
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SET schema_name = NEW.table_schema, table_name = NEW.table_name
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WHERE (schema_name, table_name) = (OLD.table_schema, OLD.table_name);
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END IF;
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RETURN NEW;
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END;
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$$;
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CREATE TRIGGER event_trigger_table_name_update_trigger
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AFTER UPDATE ON hdb_catalog.hdb_table
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FOR EACH ROW EXECUTE PROCEDURE hdb_catalog.event_trigger_table_name_update();
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-- this clears pre-existing invalid triggers
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CREATE TEMP TABLE invalid_triggers AS
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WITH valid_event_triggers AS (
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SELECT name FROM hdb_catalog.event_triggers
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),
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archive_invalid_events AS (
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UPDATE hdb_catalog.event_log set archived = 't'
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WHERE trigger_name NOT IN (select name from valid_event_triggers)
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)
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SELECT routine_name FROM information_schema.routines
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WHERE routine_type='FUNCTION' AND specific_schema='hdb_views' AND routine_name NOT IN (
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SELECT left('notify_hasura_' || name || '_INSERT', 63) FROM valid_event_triggers -- trigger names are truncated to 63 chars
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UNION
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SELECT left('notify_hasura_' || name || '_UPDATE', 63) FROM valid_event_triggers
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UNION
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select left('notify_hasura_' || name || '_DELETE', 63) FROM valid_event_triggers
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);
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DO $$ DECLARE
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r RECORD;
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BEGIN
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FOR r IN (SELECT routine_name from invalid_triggers) LOOP
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EXECUTE 'DROP FUNCTION IF EXISTS hdb_views.' || quote_ident(r.routine_name) || '() CASCADE'; -- without '()' here, PG < 10 will throw error
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END LOOP;
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END $$;
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