想通过 adminInfo字段查询，对象内{adminOpenID: wxContext.OPENID,}的值是否一直。但查询结果为空。

exports.main = async (event, context) => {
  const wxContext = cloud.getWXContext()
  const _ = db.command
  
  return db.collection('smallShop').where({
    adminInfo: _.all([
      _.elemMatch({
        adminOpenID: wxContext.OPENID,
      })
    ]),
  }).get()
}