See https://do.pingcap.net/jenkins/blue/organizations/jenkins/pingcap%2Ftiflow%2Fperiodics_cdc_integration_mysql_test/detail/periodics_cdc_integration_mysql_test/780/pipeline/ In https://github.com/pingcap/tidb/pull/65240, we changed the behavior of `GET_FORMAT`. Then the test of `date_formats` in this repo should also be modified.