MySQL 8.4 Release Notes
28.3.4 INFORMATION_SCHEMA CHARACTER_SETS 表
The CHARACTER_SETS table provides information about available character sets.
The CHARACTER_SETS table has these columns:
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CHARACTER_SET_NAMEThe character set name.
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DEFAULT_COLLATE_NAMEThe default collation for the character set.
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DESCRIPTIONA description of the character set.
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MAXLENThe maximum number of bytes required to store one character.
Character set information is also available from the SHOW CHARACTER SET statement. See Section 15.7.7.4, “SHOW CHARACTER SET Statement”. The following statements are equivalent:
SELECT * FROM INFORMATION_SCHEMA.CHARACTER_SETS
[WHERE CHARACTER_SET_NAME LIKE 'wild']
SHOW CHARACTER SET
[LIKE 'wild']