ENUM and SET are specialized MySQL data types for handling fixed lists. ENUM allows a single value from a set, stored as an integer index, suitable for limited options like order statuses, with support for up to 65,535 elements. SET permits multiple selections from a defined list, internally stored as a bitmap, supporting up to 64 values, making it ideal for scenarios like user permissions. Both types enhance schema clarity but can lead to issues if mismanaged, warranting careful implementation.
ENUM is a string object that can hold a single value chosen from a predefined list. It’s stored internally as an integer index, supports up to 65,535 elements, and is ideal for fixed options like order statuses.
SET is a string object allowing any combination of values from a predefined list, stored as a bitmap. It supports up to 64 values, making it useful for scenarios like user permissions where multiple selections are allowed.
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