Sequelize removeColumn 方法不会删除枚举类型

Question

我使用迁移文件向已经存在的数据库表添加了一个列，如下所示

module.exports = {
  up: (queryInterface, Sequelize) => {
    return queryInterface.addColumn('Results', 'mid_term_type',  Sequelize.ENUM(['first', 'second']));
  },

  down: (queryInterface, Sequelize) => {
      return queryInterface.removeColumn('Results', 'mid_term_type'));
  }
};

如果我通过运行sequelize db:migrate 迁移文件，则该列将添加到数据库中。

我遇到的问题是当我运行 sequelize db:migrate:undo:all 然后 sequelize db:migrate 撤消添加的列时。

我收到以下错误：

ERROR: type "enum_Results_mid_term_type" already exists

如何通过运行equelize db:migrate:undo:all 删除“enum_Results_mid_term_type”

• 续集：^5.22.3
• 续集-cli：^5.5.1

Answer 1

module.exports = {
  up: (queryInterface, Sequelize) => {
    return queryInterface.addColumn('Results', 'mid_term_type',  Sequelize.ENUM(['first', 'second']));
  },

  down: async (queryInterface, Sequelize) => {
      await queryInterface.removeColumn('Results', 'mid_term_type'));
      await queryInterface.sequelize.query('drop type enum_Results_mid_term_type;');
  }
};