SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    ColumnsRegexpMatcher
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier ColumnsClauseTest
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier product_price