SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 6)
   ExpressionList (children 2)
    Identifier c0
    Function sum (alias s) (children 1)
     ExpressionList (children 1)
      Identifier c1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_limit_by_validation
   ExpressionList (children 1)
    Identifier c0
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier c0
   Literal UInt64_1
   ExpressionList (children 1)
    Identifier c0
