SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 5)
    Identifier k1
    Identifier k2
    Identifier k3
    Identifier val_t1
    Identifier val_t2
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t1_00203
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier t2_00203
     TableJoin (children 1)
      ExpressionList (children 3)
       Identifier k3
       Identifier k1
       Identifier k2
   ExpressionList (children 3)
    OrderByElement (children 1)
     Identifier k1
    OrderByElement (children 1)
     Identifier k2
    OrderByElement (children 1)
     Identifier k3