SELECT citus_run_local_command($$SELECT 1; SELECT 1$$);
 citus_run_local_command
---------------------------------------------------------------------

(1 row)

SELECT citus_run_local_command($$SELECT 1; SELECT 1/0$$);
ERROR:  division by zero
CONTEXT:  SQL statement "SELECT 1; SELECT 1/0"
PL/pgSQL function citus_run_local_command(text) line XX at EXECUTE
SELECT citus_run_local_command(NULL);
ERROR:  query string argument of EXECUTE is null
CONTEXT:  PL/pgSQL function citus_run_local_command(text) line XX at EXECUTE