CreateQuery projection_test (children 3)
 Identifier projection_test
 Columns definition (children 2)
  ExpressionList (children 17)
   ColumnDeclaration sum(block_count) (children 1)
    DataType UInt64
   ColumnDeclaration domain_alias (children 2)
    DataType UInt64
    Function length (children 1)
     ExpressionList (children 1)
      Identifier domain
   ColumnDeclaration datetime (children 1)
    DataType DateTime
   ColumnDeclaration domain (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration x_id (children 1)
    DataType String
   ColumnDeclaration y_id (children 1)
    DataType String
   ColumnDeclaration block_count (children 1)
    DataType Int64
   ColumnDeclaration retry_count (children 1)
    DataType Int64
   ColumnDeclaration duration (children 1)
    DataType Int64
   ColumnDeclaration kbytes (children 1)
    DataType Int64
   ColumnDeclaration buffer_time (children 1)
    DataType Int64
   ColumnDeclaration first_time (children 1)
    DataType Int64
   ColumnDeclaration total_bytes (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt64
   ColumnDeclaration valid_bytes (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt64
   ColumnDeclaration completed_bytes (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt64
   ColumnDeclaration fixed_bytes (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt64
   ColumnDeclaration force_bytes (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt64
  ExpressionList (children 1)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 19)
      Function toStartOfMinute (alias dt_m) (children 1)
       ExpressionList (children 1)
        Identifier datetime
      Function divide (children 1)
       ExpressionList (children 2)
        Function countIf (children 1)
         ExpressionList (children 1)
          Function equals (children 1)
           ExpressionList (children 2)
            Identifier first_time
            Literal UInt64_0
        Function count (children 1)
         ExpressionList
      Function avg (children 1)
       ExpressionList (children 1)
        Function divide (children 1)
         ExpressionList (children 2)
          Function multiply (children 1)
           ExpressionList (children 2)
            Identifier kbytes
            Literal UInt64_8
          Identifier duration
      Function count (children 1)
       ExpressionList
      Function divide (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier block_count
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier duration
      Function avg (children 1)
       ExpressionList (children 1)
        Function divide (children 1)
         ExpressionList (children 2)
          Identifier block_count
          Identifier duration
      Function divide (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier buffer_time
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier duration
      Function avg (children 1)
       ExpressionList (children 1)
        Function divide (children 1)
         ExpressionList (children 2)
          Identifier buffer_time
          Identifier duration
      Function divide (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier valid_bytes
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier total_bytes
      Function divide (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier completed_bytes
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier total_bytes
      Function divide (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier fixed_bytes
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier total_bytes
      Function divide (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier force_bytes
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier total_bytes
      Function divide (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier valid_bytes
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier total_bytes
      Function divide (children 1)
       ExpressionList (children 2)
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier retry_count
        Function sum (children 1)
         ExpressionList (children 1)
          Identifier duration
      Function avg (children 1)
       ExpressionList (children 1)
        Function divide (children 1)
         ExpressionList (children 2)
          Identifier retry_count
          Identifier duration
      Function divide (children 1)
       ExpressionList (children 2)
        Function countIf (children 1)
         ExpressionList (children 1)
          Function greater (children 1)
           ExpressionList (children 2)
            Identifier block_count
            Literal UInt64_0
        Function count (children 1)
         ExpressionList
      Function divide (children 1)
       ExpressionList (children 2)
        Function countIf (children 1)
         ExpressionList (children 1)
          Function equals (children 1)
           ExpressionList (children 2)
            Identifier first_time
            Literal UInt64_0
        Function count (children 1)
         ExpressionList
      Function uniqHLL12 (children 1)
       ExpressionList (children 1)
        Identifier x_id
      Function uniqHLL12 (children 1)
       ExpressionList (children 1)
        Identifier y_id
     ExpressionList (children 2)
      Identifier dt_m
      Identifier domain
 Storage definition (children 4)
  Function MergeTree
  Function toDate (children 1)
   ExpressionList (children 1)
    Identifier datetime
  Function toStartOfTenMinutes (children 1)
   ExpressionList (children 1)
    Identifier datetime
  Set