SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 4)
    Function any (children 1)
     ExpressionList (children 1)
      Identifier _partition_id
    Function any (children 1)
     ExpressionList (children 1)
      Identifier _sample_factor
    Function any (alias _partition_id) (children 1)
     ExpressionList (children 1)
      Identifier _partition_id
    Function any (alias _sample_factor) (children 1)
     ExpressionList (children 1)
      Identifier _sample_factor
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test
   Set
