How to set properties in mysql

Mysql method of setting attributes: execute the [ALTER TABLE [table name] CHANGE [old field name] [new field name] [attribute];] statement to set it.

Modify existing field names and attributes:

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ALTER TABLE 【表名】 CHANGE 【老字段名】【新字段名】 【...属性】;

Example:

USE emoji;
ALTER TABLE fincrm_employee CHANGE orgs test varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '' COMMENT 'test';

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