MySQL 8.4 Release Notes
28.3.7 INFORMATION_SCHEMA COLLATION_CHARACTER_SET_APPLICABILITY 表
The COLLATION_CHARACTER_SET_APPLICABILITY table indicates what character set is applicable for what collation.
The COLLATION_CHARACTER_SET_APPLICABILITY table has these columns:
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COLLATION_NAMEThe collation name.
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CHARACTER_SET_NAMEThe name of the character set with which the collation is associated.
The COLLATION_CHARACTER_SET_APPLICABILITY columns are equivalent to the first two columns displayed by the SHOW COLLATION statement.