You can execute the
CANCEL DDL statement to cancel a DDL job that is in the RUNNING or PAUSED state. After the DDL
job is canceled, the changes that occurred are rolled back, and the data table is
restored to the version before the DDL job was executed.
CANCEL DDL JOB_ID;
SHOW DDLstatement to obtain the value of the JOB_ID parameter.
CANCEL DDL 1359628009396502528; Query OK, 1 row affected (0.03 sec)