SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 3)
    Identifier k
    Function groupArrayForEach (children 1)
     ExpressionList (children 1)
      Identifier arr
    Function quantilesExactForEach (children 2)
     ExpressionList (children 1)
      Identifier arr
     ExpressionList (children 2)
      Literal Float64_0.5
      Literal Float64_0.9
   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_3
           Function arrayMap (alias arr) (children 1)
            ExpressionList (children 2)
             Function lambda (children 1)
              ExpressionList (children 2)
               Function tuple (children 1)
                ExpressionList (children 1)
                 Identifier x
               Function plus (children 1)
                ExpressionList (children 2)
                 Identifier number
                 Identifier x
             Function range (children 1)
              ExpressionList (children 1)
               Identifier number
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.numbers
          Literal UInt64_10
   ExpressionList (children 1)
    Identifier k
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier k