SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    QualifiedAsterisk (children 1)
     Identifier t1
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier t2
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier b
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ALL
