CreateQuery summing_merge_tree_aggregate_function (children 3)
 Identifier summing_merge_tree_aggregate_function
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration d (children 1)
    Function today (children 1)
     ExpressionList
   ColumnDeclaration k (children 1)
    DataType UInt64
   ColumnDeclaration c (children 1)
    DataType UInt64
   ColumnDeclaration x (children 1)
    DataType AggregateFunction (children 1)
     ExpressionList (children 2)
      Function topK (children 1)
       ExpressionList (children 1)
        Literal UInt64_2
      DataType UInt8
 Storage definition (children 1)
  Function SummingMergeTree (children 1)
   ExpressionList (children 3)
    Identifier d
    Identifier k
    Literal UInt64_8192
