问：'/**/and/**/DBMS_PIPE.RECEIVE_MESSAGE('c',0)='c

答：暂未回答

问：'and(select+1)>0waitfor/**/delay'0:0:2

答：暂未回答

问：'and(select+1)>0waitfor/**/delay'0:0:0

答：暂未回答

问：'/**/and(select'1'from/**/pg_sleep(2))::text>'0

答：暂未回答

问：'/**/and(select'1'from/**/pg_sleep(0))::text>'0

答：暂未回答