ConvertToMySqlDbType for NewDate is not implemented

[dtrickett]

Using MySQL 5.7.12 and running into the following when a UNION query contains a date:

  ----> MySqlConnector.MySqlException : Failed to read the result set.
Data:
  Server Error Code: 0
  SqlState: <null>

  ----> System.NotImplementedException : ConvertToMySqlDbType for NewDate is not implemented

Seems this is fixed in MySQL 5.7.22
"Metadata from result sets for UNION ALL queries could say NEWDATE rather than DATE. (Bug #27422376)"

Is this something that can be addressed within the library, or only by updating MySQL? We are attempting to migrate from MySql.Data and this is currently the only blocker.

[bgrainger]

This will require a bugfix in the library.

Thanks for reporting the detail that it requires an old MySQL 5.7.x version with a UNION ALL query to repro.

[bgrainger]

Fixed in 1.3.11.