> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/clientserver-protocol/replication-protocol/annotate_rows_event.md).

# ANNOTATE\_ROWS\_EVENT

`ANNOTATE_ROWS_EVENT` events accompany row events and describe the query which caused the row event.

You can enable this with [--binlog-annotate-row-events](/docs/server/ha-and-performance/standard-replication/replication-and-binary-log-system-variables.md) (default on).

In the binary log, each `ANNOTATE_ROWS` event precedes the corresponding Table map event.

For additional information refer to the [annotate\_rows\_log\_event](/docs/server/clients-and-utilities/logging-tools/mariadb-binlog/annotate_rows_log_event.md) documentation.

{% hint style="info" %}
The master server sends `ANNOTATE_ROWS_EVENT` events only if the replica server connects with the `BINLOG_SEND_ANNOTATE_ROWS_EVENT` flag (value is 2) in the `COM_BINLOG_DUMP` replica registration phase.
{% endhint %}

## Header

* Event Type is 160 (`0xa0`).

## Fields

* [string\<EOF>](/docs/server/reference/clientserver-protocol/protocol-data-types.md#fixed-length-bytes) The SQL statement (not null-terminated).

## Complete Example with CRC32

```
ee b7 15 5a a0 01 00 00  00 36 00 00 00 80 0b 00  ...Z.....6......
00 00 00 69 6e 73 65 72  74 20 69 6e 74 6f 20 74  ...insert into t
65 73 74 2e 74 34 20 76  61 6c 75 65 73 28 31 30  est.t4 values(10
30 29 6d 4c 42 33                                 0)mLB3
```

<sub>*This page is licensed: CC BY-SA / Gnu FDL*</sub>

{% @marketo/form formId="4316" %}


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