Explain EXPLAIN QUERY TREE (children 2)
 Set
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 5)
    ExpressionList (children 1)
     Function avg (alias k) (children 1)
      ExpressionList (children 1)
       Function multiply (children 1)
        ExpressionList (children 2)
         Function log (children 1)
          ExpressionList (children 1)
           Literal UInt64_2
         Identifier number
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_10000000
    ExpressionList (children 2)
     ExpressionList (children 3)
      Function multiply (children 1)
       ExpressionList (children 2)
        Function modulo (children 1)
         ExpressionList (children 2)
          Identifier number
          Literal UInt64_2
        Function modulo (children 1)
         ExpressionList (children 2)
          Identifier number
          Literal UInt64_3
      Function modulo (children 1)
       ExpressionList (children 2)
        Identifier number
        Literal UInt64_3
      Function modulo (children 1)
       ExpressionList (children 2)
        Identifier number
        Literal UInt64_2
     ExpressionList (children 1)
      Function modulo (children 1)
       ExpressionList (children 2)
        Identifier number
        Literal UInt64_4
    Function greater (children 1)
     ExpressionList (children 2)
      Function avg (children 1)
       ExpressionList (children 1)
        Function multiply (children 1)
         ExpressionList (children 2)
          Function log (children 1)
           ExpressionList (children 1)
            Literal UInt64_2
          Identifier number
      Literal Float64_3465735.3
    ExpressionList (children 1)
     OrderByElement (children 1)
      Identifier k
