CreateQuery trace_log (children 3)
 Identifier trace_log
 Columns definition (children 1)
  ExpressionList (children 10)
   ColumnDeclaration event_date (children 1)
    DataType Date
   ColumnDeclaration event_time (children 1)
    DataType DateTime
   ColumnDeclaration event_time_microseconds (children 1)
    DataType DateTime64 (children 1)
     ExpressionList (children 1)
      Literal UInt64_6
   ColumnDeclaration timestamp_ns (children 1)
    DataType UInt64
   ColumnDeclaration revision (children 1)
    DataType UInt32
   ColumnDeclaration trace_type (children 1)
    DataType Enum8 (children 1)
     ExpressionList (children 4)
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'Real\'
        Literal UInt64_0
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'CPU\'
        Literal UInt64_1
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'Memory\'
        Literal UInt64_2
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'MemorySample\'
        Literal UInt64_3
   ColumnDeclaration thread_id (children 1)
    DataType UInt64
   ColumnDeclaration query_id (children 1)
    DataType String
   ColumnDeclaration trace (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt64
   ColumnDeclaration size (children 1)
    DataType Int64
 Storage definition (children 4)
  Function MergeTree
  Function toYYYYMM (children 1)
   ExpressionList (children 1)
    Identifier event_date
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier event_date
    Identifier event_time
  Set