SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function test_function (alias a) (children 1)
     ExpressionList (children 2)
      Identifier number
      Identifier number
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_10
   ExpressionList (children 1)
    Identifier a
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier a
