SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Function splitByChar (alias arr) (children 1)
     ExpressionList (children 2)
      Literal \'0\'
      Function toString (children 1)
       ExpressionList (children 1)
        Function intHash64 (children 1)
         ExpressionList (children 1)
          Identifier number
    Function arraySort (alias sorted) (children 1)
     ExpressionList (children 1)
      Identifier arr
    Function arraySort (alias sorted_nums) (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function toUInt64OrZero (children 1)
         ExpressionList (children 1)
          Identifier x
      Identifier arr
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_10
