Column select expression specifies too many columns

  Explanation:  A column select expression may only fetch one
  value unless it is in an EXISTS predicate.  This means any
  column select expression that uses the column wildcard (*) must
  have only one-column tables in its FROM clause.

  User Action:  If you specified more than one column explicitly,
  remove all but one.  If you used a wildcard, explicitly name a
  single column instead.