SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Literal \'= 127.0.0.1\'
    Identifier ipv6_
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier ipv6_test
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier ipv6_
     Function IPv4ToIPv6 (children 1)
      ExpressionList (children 1)
       Function toIPv4 (children 1)
        ExpressionList (children 1)
         Literal \'127.0.0.1\'
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ipv6_
