如何使用查询构建器将值插入到created_at字段

use Illuminate\Support\Facades\DB;

DB::table('users')->insert([
    'name' => 'John Doe',
    'email' => 'john@example.com',
    'created_at' => now(), // 使用 Laravel 的 now() 函数获取当前时间
]);

from sqlalchemy import create_engine, Table, Column, Integer, String, MetaData, DateTime
from sqlalchemy.sql import func

engine = create_engine('postgresql://user:password@localhost/dbname')
metadata = MetaData()

users = Table('users', metadata,
    Column('id', Integer, primary_key=True),
    Column('name', String),
    Column('email', String),
    Column('created_at', DateTime(timezone=True), server_default=func.now())
)

with engine.connect() as connection:
    ins = users.insert().values(name='John Doe', email='john@example.com')
    connection.execute(ins)

const knex = require('knex')({
  client: 'sqlite3',
  connection: {
    filename: './mydb.sqlite'
  }
});

knex('users').insert({
  name: 'John Doe',
  email: 'john@example.com',
  created_at: knex.fn.now() // 使用 knex.js 的 now() 函数
}).then(() => {
  console.log('User inserted');
}).catch((err) => {
  console.error(err);
});