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Just like Java's Instant and LocalDateTime, server-side TIMESTAMP and DATETIME fields serve distinct purposes. One represents a selected time limit (a moment), whereas the other doesn't. MariaDB Connector/J releases older than 1.2.zero may be compatible with server variations older than MariaDB 5.5 and MySQL 5.5, but those MariaDB Connector/J releases aren't supported anymore. MariaDB Conn