I am attempting to use the MariaDB ODBC connector as a replacement for the MyODBC connector and have run into an issue where all DATE and DATETIME fields are being read by the report as having NULL values.
I found the following reference to this issue here: https://apps.support.sap.com/sap/support/knowledge/public/en/2604895
That page describes a workaround (one that would not be practical in my situation) but for the cause says only "MariaDB is not listed in the supported data sources for Crystal Reports". In my case I am using the MariaDB ODBC connector to connect to a MySQL 5.0 database, so something must be different in how the results appear to the report.
I would be happy to provide any additional information in tracking down the difference that is causing the conflict.