peter
eed06559c0
Single source of truth for the timeseries PostgreSQL schema shared by the Python (TSAPI_SERIESDB_PG_PY) and C++ (TSAPI_POSTGRES_CPP) libraries. SQL seeded byte-for-byte from TSAPI_SERIESDB_PG_PY/tsapi_pgdb/sql on 2026-09-02. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
37 lines
1 KiB
PL/PgSQL
37 lines
1 KiB
PL/PgSQL
-- Triggers and event triggers
|
|
-- Generated: 2025-10-15T12:24:56.582392
|
|
|
|
-- Event triggers
|
|
-- Event trigger: prevent_series_drops
|
|
CREATE OR REPLACE FUNCTION meta.prevent_direct_drop()
|
|
RETURNS event_trigger
|
|
LANGUAGE plpgsql
|
|
AS $function$
|
|
DECLARE
|
|
obj record;
|
|
BEGIN
|
|
-- Get the current context
|
|
IF current_setting('application.dropping_series', true) = 'true' THEN
|
|
-- Allow the drop if it's coming from our procedures
|
|
RETURN;
|
|
END IF;
|
|
|
|
FOR obj IN SELECT * FROM pg_event_trigger_dropped_objects()
|
|
WHERE object_type = 'table'
|
|
LOOP
|
|
IF EXISTS (
|
|
SELECT 1 FROM meta.series
|
|
WHERE table_name = obj.object_name
|
|
AND db_schema = obj.schema_name
|
|
) THEN
|
|
RAISE EXCEPTION 'Table %.% is registered in series and can only be dropped using TimeseriesDB.drop_series()',
|
|
obj.schema_name, obj.object_name;
|
|
END IF;
|
|
END LOOP;
|
|
END;
|
|
$function$;
|
|
|
|
|
|
CREATE EVENT TRIGGER prevent_series_drops
|
|
ON sql_drop
|
|
EXECUTE FUNCTION meta.prevent_direct_drop();
|