MySQL error code
MySQL error 3694
MySQL server error 3694 is ER_REGEXP_INVALID_BACK_REF, reported with SQLSTATE HY000.
Invalid back-reference in regular expression.
| Error | 3694 |
|---|---|
| Name | ER_REGEXP_INVALID_BACK_REF |
| SQLSTATE | HY000 |
| Group | Server errors |
Source: MySQL 8.4 Error Reference