node.js - Sequelize 中的复合主键

Question

有人可以建议我如何在同一个表中的两列上设置主键。

var relation = {
        'user_id': {
            type: DataTypes.INTEGER
        },
        'organization_id':{
            type: DataTypes.INTEGER
        }
}

我想定义一个主键，如 primary key (user_id, organization_id)注意:使用 PostgreSQL

Answer 1

您可以通过指定 primaryKey: true 在 Sequelize 中创建复合主键针对不止一栏。例如。

import { sequelize } from '../../db';
import { Model, DataTypes } from 'sequelize';

class Tbl extends Model {}
Tbl.init(
  {
    user_id: {
      type: DataTypes.INTEGER,
      primaryKey: true,
    },
    organization_id: {
      type: DataTypes.INTEGER,
      primaryKey: true,
    },
  },
  { sequelize, modelName: 'tbls' },
);

(async function test() {
  try {
    await sequelize.sync({ force: true });
  } catch (error) {
    console.log(error);
  } finally {
    await sequelize.close();
  }
})();

执行结果和生成的SQL:

Executing (default): CREATE TABLE IF NOT EXISTS "tbls" ("user_id" INTEGER , "organization_id" INTEGER , PRIMARY KEY ("user_id","organization_id"))

检查表定义:

=# \d+ tbls;
                             Table "public.tbls"
     Column      |  Type   | Modifiers | Storage | Stats target | Description
-----------------+---------+-----------+---------+--------------+-------------
 user_id         | integer | not null  | plain   |              |
 organization_id | integer | not null  | plain   |              |
Indexes:
    "tbls_pkey" PRIMARY KEY, btree (user_id, organization_id)