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27 lines
1.0 KiB
PL/PgSQL
27 lines
1.0 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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-- (see Note [Diff-and-patch event triggers on replace] in Hasura.RQL.DDL.EventTrigger), 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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