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

答：暂未回答

问： expr 878627550 + 954796267

答：暂未回答

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

答：暂未回答

问：${921249372+968475965}

答：暂未回答

问："and(select*from(select+sleep(2))a/**/union/**/select+1)="

答：暂未回答