SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    ColumnsListMatcher (children 2)
     ExpressionList (children 2)
      Identifier bar
      Identifier foo
     ColumnsTransformerList (children 1)
      ColumnsApplyTransformer
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test
