The ENUM datatype provides a means for storing a maximum of one member chosen from a predefined group consisting of a maximum of 65,535 distinct members. The choice of members is restricted to those declared in the column definition. If the column declaration includes the NULL attribute, then NULL will be considered a valid value and will be the default. If NOT NULL is declared, the first member of the list will be the default.ffffffffff SET("The ENUM datatype provides a means for storing a maximum of one member chosen from a predefined group consisting of a maximum of 65,535 distinct members. The choice of members is restricted to those declared in the column definition. If the column declaration includes the NULL attribute, then NULL will be considered a valid value and will be the default. If NOT NULL is declared, the first member of the list will be the default.