select
object_name(id) as "object_name",
name as "column_name"
from
syscolumns
where
name like "xyz%"
Technically, this will also return columns from views and parameter names from procedures.
To really limit it to tables...
select
o.name as "table_name",
c.name as "column_name"
from
syscolumns c, sysobjects o
where
c.id = o.id
and o.type in ('U', 'S') -- User and System tables
and c.name like "xyz%"
