MySQL error code
MySQL error 4000
MySQL server error 4000 is ER_WARN_HYPERGRAPH_EXPERIMENTAL, reported with SQLSTATE HY000.
The hypergraph optimizer is highly experimental and is meant for testing only. Do not enable it unless you are a MySQL developer.
| Error | 4000 |
|---|---|
| Name | ER_WARN_HYPERGRAPH_EXPERIMENTAL |
| SQLSTATE | HY000 |
| Group | Server errors |
Source: MySQL 8.4 Error Reference