CreateQuery nested_smt (children 3)
 Identifier nested_smt
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration date (children 1)
    DataType date
   ColumnDeclaration val (children 1)
    DataType UInt64
   ColumnDeclaration counters_Map (children 1)
    DataType Nested (children 1)
     ExpressionList (children 2)
      NameTypePair id (children 1)
       DataType UInt8
      NameTypePair count (children 1)
       DataType Int32
 Storage definition (children 2)
  Function SummingMergeTree (children 1)
   ExpressionList
  Identifier date
