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information_schema.COLLATIONS

更新时间：2026-04-10 12:01:01

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功能

展示每个字符集的比对方法信息。

说明

从 V1.4 版本开始引入。

字段说明

字段名称	类型	是否可以为 NULL
COLLATION_NAME	varchar(128)	NO	比对方法名称
CHARACTER_SET_NAME	varchar(128)	NO	和 collation 关联的字符集名称
ID	bigint(20)	NO	collation 的 ID
IS_DEFAULT	varchar(4)	NO	collation 是否是对应字符集的默认比对方法
IS_COMPILED	varchar(4)	NO	字符集是否被编译到服务器中
SORTLEN	bigint(20)	NO	排序字符集需要用到的内存大小

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