10일 20일 30일 1 1 2 dbms_pipe.receive_me 1 3 OR 1 4 WAITFOR 2 5 PG_SLEEP20 1 6 SLEEP20 1 7 6145 8 dbms_pipe.receive_messagea20 1 9 kYHv 10 kYHv. 11 kYHvGXUndFhLsqWm 1 1 1 2 OR 2 3 dbms_pipe.receive_me 2 4 WAITFOR 3 5 PG_SLEEP20 6 SLEEP20 3 7 dbms_pipe.receive_messagea20 1 8 6145 9 kYHv 10 kYHv. 11 kYHvGXUndFhLsqWm 1 1 2 dbms_pipe.receive_me 3 OR 2 4 SLEEP20 1 5 WAITFOR 1 6 PG_SLEEP20 7 dbms_pipe.receive_messagea20 8 6145 9 kYHv 10 kYHv. 11 kYHvGXUndFhLsqWm 11위 - 20위