CreateQuery summing_mt_aggregating_column (children 3)
 Identifier summing_mt_aggregating_column
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration Key (children 1)
    DataType UInt64
   ColumnDeclaration Value (children 1)
    DataType UInt64
   ColumnDeclaration ConcatArraySimple (children 1)
    DataType SimpleAggregateFunction (children 1)
     ExpressionList (children 2)
      Identifier groupArrayArray
      DataType Array (children 1)
       ExpressionList (children 1)
        DataType UInt64
   ColumnDeclaration ConcatArrayComplex (children 1)
    DataType AggregateFunction (children 1)
     ExpressionList (children 2)
      Identifier groupArrayArray
      DataType Array (children 1)
       ExpressionList (children 1)
        DataType UInt64
 Storage definition (children 2)
  Function SummingMergeTree (children 1)
   ExpressionList
  Identifier Key
