Question

'use strict';

module.exports = {
	up: (queryInterface, Sequelize) => {
		return Promise.all([
			queryInterface.addColumn('Posts', 'userAccountId', {
				type: Sequelize.INTEGER,
			}),
			queryInterface.addColumn('Posts', 'postTopicId', {
				type: Sequelize.INTEGER,
			}),
			queryInterface.addConstraint('Posts', ['userAccountId'], {
				type: 'foreign key',
				name: 'userAccountId',
				references: {
					table: 'UserAccounts',
					field: 'id',
				},
				onDelete: 'no action',
				onUpdate: 'no action',
			}),
			queryInterface.addConstraint('Posts', ['postTopicId'], {
				type: 'foreign key',
				name: 'postTopicId',
				references: {
					table: 'PostTopics',
					field: 'id',
				},
				onDelete: 'no action',
				onUpdate: 'no action',
			}),
		]);
	},

	down: (queryInterface, Sequelize) => {
		return Promise.all([
			queryInterface.removeColumn('Posts', 'userAccountId'),
			queryInterface.removeColumn('Posts', 'postTopicId'),
			queryInterface.removeConstraint('Posts', 'userAccountId'),
			queryInterface.removeConstraint('Posts', 'postTopicId'),
		]);
	},
};

当我运行命令npx sequelize db：migrate时，出现此错误“错误：外键约束中引用的列“ postTopicId”不存在”

我没有错，所有其他迁移运行正常。我正在docker容器中运行数据库。

Answer 1

在执行修改结构并相互依赖的查询时，请勿使用Promise.all。 Promise.all不保证执行查询的原始顺序。使用事务和顺序执行：

return queryInterface.sequelize.transaction(async transaction => {
            await queryInterface.addColumn('Posts', 'userAccountId', {
                type: Sequelize.INTEGER,
            }, { transaction })
            await queryInterface.addColumn('Posts', 'postTopicId', {
                type: Sequelize.INTEGER,
            }, { transaction })
            await queryInterface.addConstraint('Posts', ['userAccountId'], {
                type: 'foreign key',
                name: 'userAccountId',
                references: {
                    table: 'UserAccounts',
                    field: 'id',
                },
                onDelete: 'no action',
                onUpdate: 'no action',
            }, { transaction })
            await queryInterface.addConstraint('Posts', ['postTopicId'], {
                type: 'foreign key',
                name: 'postTopicId',
                references: {
                    table: 'PostTopics',
                    field: 'id',
                },
                onDelete: 'no action',
                onUpdate: 'no action',
            }, { transaction })
        });

在sequelize上运行迁移时出错

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