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004_comission/tsc1877/task1/project/admin/db_seed/helloworld.js
louiscklaw 5c584709c4 update,
2025-01-31 20:14:02 +08:00

33 lines
934 B
JavaScript

const { Sequelize, DataTypes } = require('sequelize');
const { sequelize } = require('./model');
const User = sequelize.define(
'User',
{
id: { type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true, unique: true },
firstName: { type: DataTypes.STRING, allowNull: false },
lastName: { type: DataTypes.STRING, allowNull: false },
},
{ timestamps: false },
);
(async () => {
try {
await sequelize.authenticate();
console.log('Connection has been established successfully.');
// create table
await sequelize.sync();
let users = await User.findAll({ attributes: ['firstName'] });
User.destroy({ truncate: true, cascade: true, force: true });
const user = await User.create({ firstName: 'John', lastName: 'Doe' });
users = await User.findAll();
// await sequelize.close();
} catch (error) {
console.error('Unable to connect to the database:', error);
}
})();