Abstract This is the MySQL™ Reference Manual. It documents MySQL 5.6 through 5.6.42, as well as NDB Cluster releases based on versions 7.3 and 7.4 of NDB through 5.6.41-ndb-7.3.23 and 5.6.41-ndb-7.4.22, respectively. It may include documentation of features of MySQL versions that have not yet been