The following is a list of all function differences between MariaDB 10.2 and MySQL 5.7. It is based on functions available in the stable versions MySQL 5.7.18 and MariaDB 10.2.38.
For a description of all differences, see Incompatibilities and Feature Differences Between MariaDB 10.2 and MySQL 5.7.
MariaDB and MySQL have differing implementations.
GTID_SUBSET
GTID_SUBTRACT
WAIT_FOR_EXECUTED_GTID_SET
WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS()
DISTANCE
MBRCOVEREDBY
ST_BUFFER_STRATEGY
ST_GeoHash
ANY_VALUE
RANDOM_BYTES
RELEASE_ALL_LOCKS
VALIDATE_PASSWORD_STRENGTH
ST_LatFromGeoHash
ST_LongFromGeoHash
ST_PointFromGeoHash
ST_SIMPLIFY
ST_VALIDATE