text: const cloud = require('wx-server-sdk')
  cloud.init({
    // API 调用都保持和云函数当前所在环境一致
    env: cloud.DYNAMIC_CURRENT_ENV
  })
  
  const db = cloud.database({});
  const db_account = db.collection('db_account');
  
  
  exports.main = async (event, context) => {
    //event.a + event.b  event 是请求方法
    const { OPENID } = cloud.getWXContext()
    return db_account.where({
      _openid: OPENID
    }).get();
  }