Use the SQLDialect property to set or return the SQL dialect used by the client. If the connection is active, the SQLDialect property cannot be set to a value greater than the database SQL dialect. If the connection is inactive, then on connect an OnDialectDowngradeWarning event may be fired if the SQLDialect is greater than the database SQL dialect. In such a case, the SQLDialect property will be downgraded to match the database SQL dialect.