tracefile_identifier specifies a custom identifier that becomes part of the log so that a row iteration trace log can be identified with ease.
| Attribute | Description |
|---|---|
| Type | Varchar |
| Default value | Empty string |
| Value range | NULL |
| Applicable scope | Session |
| Involved in serialization | Yes |
The TRACING and STAT hints can instruct the executor to print each line of content during operator execution. To make the content easy to search and identify, you can use tracefile_identifier to specify a string, such as XXXYYYZZZ or MY_TRACE. The string is output with the row content to the log for ease of searching.