Collection.update

更新集合内符合查询条件的文档

返回值 Promise

resolve 结果：

reject 结果：

代码示例

const cloud = require('swan-server-sdk')
exports.main = async (event, context) => {
  cloud.init(context)
  const db = cloud.database()
  const cmd = db.command
  try {
    return await db.collection('articles').where({
      status: 0
    }).update({
      visits: cmd.inc(1)
    })
  }
  catch(err) {
    console.log(err)
  }
}