SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier u
   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_4096
           Function uniqCombined (alias u) (children 1)
            ExpressionList (children 1)
             Function tuple (children 1)
              ExpressionList (children 1)
               Function materialize (children 1)
                ExpressionList (children 1)
                 Function toLowCardinality (children 1)
                  ExpressionList (children 1)
                   Function toNullable (children 1)
                    ExpressionList (children 1)
                     Literal UInt64_16
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Function numbers (children 1)
              ExpressionList (children 1)
               Function multiply (children 1)
                ExpressionList (children 2)
                 Literal UInt64_4096
                 Literal UInt64_100
          ExpressionList (children 1)
           Identifier k
   Set
