SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Identifier k
    Function finalizeAggregation (children 1)
     ExpressionList (children 1)
      Function quantilesTimingState (children 2)
       ExpressionList (children 1)
        Identifier x
       ExpressionList (children 1)
        Literal Float64_0.5
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 2)
           Function intDiv (alias k) (children 1)
            ExpressionList (children 2)
             Identifier number
             Literal UInt64_30000 (alias d)
           Function modulo (alias x) (children 1)
            ExpressionList (children 2)
             Identifier number
             Identifier d
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.numbers
          Literal UInt64_100000
   ExpressionList (children 1)
    Identifier k
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier k