DROP FUNCTION  import.del_import();

CREATE OR REPLACE FUNCTION import.del_import(imp_id int) RETURNS void AS
$$
DECLARE
    tmp RECORD;
BEGIN
    FOR tmp IN
        SELECT * FROM import.track_imports WHERE import_id = imp_id AND NOT deletion
    LOOP
        EXECUTE format('DELETE FROM %s WHERE id = $1', tmp.relation) USING tmp.key;
    END LOOP;
END;
$$
LANGUAGE plpgsql;