Question

我有这两个表：

const AdminUser = sequelize.define('AdminUser', {
    adminUserId: {
      type: DataTypes.UUID,
      defaultValue: DataTypes.UUIDV4, 
      unique: true, 
      allowNull: false,
      primaryKey: true
    },
    adminUsername: {
      type: 'citext',
      unique: true,
      allowNull: false
    },
    password: {
      type: DataTypes.STRING,
      allowNull: false
    },
    role: {
      type: DataTypes.ENUM,
      values: ['super-admin', 'non-super-admin']  
    },
    active: {
      type: DataTypes.BOOLEAN
    }
  })

AdminUser.belongsToMany(MsTeam, {
      through: 'AdminUserTeam',
      foreignKey: {
        name: 'adminUserId',
        allowNull: false
      }
    })

和

const MsTeam = sequelize.define('MsTeam', {
    teamId: {
      type: DataTypes.UUID,
      defaultValue: DataTypes.UUIDV4, 
      unique: true, 
      allowNull: false,
      primaryKey: true
    },
    msTeamId: {
      type: DataTypes.STRING,
      unique: true,
      allowNull: false
    },
    msTeamName: {
      type: DataTypes.STRING,
      allowNull: false
    },
    active: {
      type: DataTypes.BOOLEAN
    }
  })

MsTeam.belongsToMany(models.AdminUser, {
      through: 'AdminUserTeam',
      foreignKey: {
        name: 'teamId',
        allowNull: false
      }
    })

他们通过'AdminUserTeam'建立了n：m关系。时间戳已启用。

但是一个简单的查询，例如

// Include team data
  const includeMsTeam = {
    model: MsTeam,
    through: {
      attributes: []
    },
    attributes: ['teamId', 'msTeamName']
  }
const users = await AdminUser.findAll({
    attributes: ['adminUserId', 'adminUsername'],
    limit: 10,
    offset: 10,
    order: [['createdAt', 'DESC']],
    include: [includeMsTeam]
  })

发生错误，

{
    "error": "column AdminUser.createdAt does not exist"
}

奇怪的是，如果我删除了include字段，查询就会成功

一个解决方案是禁用in this SO answer中提到的时间戳。但是，如果我想保留时间戳怎么办？如何使用关联通过“ createdAt”排序？

编辑：添加SQL查询

Executing (default): SELECT "AdminUser".*, "MsTeams"."teamId" AS "MsTeams.teamId", "MsTeams"."msTeamName" AS "MsTeams.msTeamName", "MsTeams->AdminUserTeam"."createdAt" AS "MsTeams.AdminUserTeam.createdAt", "MsTeams->AdminUserTeam"."updatedAt" AS "MsTeams.AdminUserTeam.updatedAt", "MsTeams->AdminUserTeam"."adminUserId" AS "MsTeams.AdminUserTeam.adminUserId", "MsTeams->AdminUserTeam"."teamId" AS "MsTeams.AdminUserTeam.teamId" FROM (SELECT "AdminUser"."adminUserId", "AdminUser"."adminUsername" FROM "AdminUsers" AS "AdminUser" WHERE "AdminUser"."role" = 'non-super-admin' AND ( SELECT "AdminUserTeam"."adminUserId" FROM "AdminUserTeam" AS "AdminUserTeam" INNER JOIN "MsTeams" AS "MsTeam" ON "AdminUserTeam"."teamId" = "MsTeam"."teamId" WHERE ("AdminUser"."adminUserId" = "AdminUserTeam"."adminUserId") LIMIT 1 ) IS NOT NULL ORDER BY "AdminUser"."createdAt" DESC LIMIT 20 OFFSET 0) AS "AdminUser" LEFT OUTER JOIN ( "AdminUserTeam" AS "MsTeams->AdminUserTeam" INNER JOIN "MsTeams" AS "MsTeams" ON "MsTeams"."teamId" = "MsTeams->AdminUserTeam"."teamId") ON "AdminUser"."adminUserId" = "MsTeams->AdminUserTeam"."adminUserId" ORDER BY "AdminUser"."createdAt" DESC;

错误发生在

ORDER BY "AdminUser"."createdAt" DESC

Answer 1

似乎sequelize会生成许多子查询，并且"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); var core_1 = require("@angular/core"); var secondclass_model_1 = require("~/shared/secondclass.model"); var data_service_1 = require("~/shared/data.service"); var TestComponent = (function () { function TestComponent(dataService) { this.dataService = dataService; // Use the component constructor to inject providers. } Object.defineProperty(TestComponent.prototype, "first", { get: function () { return this._first; }, set: function (value) { this._first = value; }, enumerable: true, configurable: true }); ; Object.defineProperty(TestComponent.prototype, "second", { get: function () { return this._second; }, set: function (value) { this._second = value; }, enumerable: true, configurable: true }); ; TestComponent.prototype.ngOnInit = function () { }; TestComponent.prototype.itemTap = function (tickettype) { var item = new secondclass_model_1.SecondClass({ foo: "bar" }); this.dataService.addItem(item); }; return TestComponent; }()); __decorate([ core_1.Input("first"), __metadata("design:type", Object), __metadata("design:paramtypes", [typeof (_a = typeof firstclass_model_1.FirstClass !== "undefined" && firstclass_model_1.FirstClass) === "function" && _a || Object]) ], TestComponent.prototype, "first", null); __decorate([ core_1.Input("second"), __metadata("design:type", Object), __metadata("design:paramtypes", [typeof (_b = typeof secondclass_model_1.SecondClass !== "undefined" && secondclass_model_1.SecondClass) === "function" && _b || Object]) ], TestComponent.prototype, "second", null); TestComponent = __decorate([ core_1.Component({ selector: "test-component", moduleId: module.id, templateUrl: "./test.component.html", styleUrls: ['./test.component.css'] }), __metadata("design:paramtypes", [typeof (_c = typeof data_service_1.DataService !== "undefined" && data_service_1.DataService) === "function" && _c || Object]) ], TestComponent); exports.TestComponent = TestComponent; var _a, _b, _c;对最顶部的createdAt不可见，请尝试将ORDER BY添加到options对象。如果这样做没有帮助，可以将subQuery: false添加到createdAt中。

Answer 2

你为什么不使用

sequelize.define('AdminUser', {
  // Columns
}, {
  timestamps: true,
});

并检查REAL DATABASE中是否有createdAt列，因为更改后继模型不会自动反映出对REAL DATABASE的更改。

Answer 3

subQuery: false无法正常工作..！

但是下面的代码将起作用：

var user = sequelize.define('user', { /* bla */ }, {
  // don't add the timestamp attributes (updatedAt, createdAt)
  timestamps: false,
  // your other configuration here
});

排序列Table.createdAt不存在

3 个答案: