ZCCADCDEDB567ABAE643E15DCF0974E503Z：嘗試使用 $ 過濾基於兩個字段的用戶，並像使用 $ 或過濾它們一樣過濾它們

Question

我有這個 function 應該返回給定月份中沒有在該月注冊的活躍用戶。 即：留存用戶

const getActiveUsersInAMonthWereNotRegisteredInThatMonth = async (
  month,
  year
) => {
  let response = {
    active_users_who_were_not_registered_that_month: null,
  };

  // Group login event in a month by user id
  const login_project_stage = {
    $project: {
      year: { $year: "$date" },
      month: { $month: "$date" },
      user: "$user",
      category: "$category",
    },
  };
  const login_filter_stage = {
    $match: {
      year: parseInt(year),
      month: parseInt(month),
      category: "LOGIN",
    },
  };
  const active_users_group_stage = {
    $group: {
      _id: "$user",
      number_of_logins: { $sum: 1 },
    },
  };

  const look_up_user_stage = {
    $lookup: {
      from: "users",
      localField: "_id",
      foreignField: "_id",
      as: "user",
    },
  };

  const project_user_stage = {
    $project: {
      user_id: { $arrayElemAt: ["$user._id", 0] },
      registration_month: { $month: { $arrayElemAt: ["$user.date", 0] } },
      registration_year: { $year: { $arrayElemAt: ["$user.date", 0] } },
    },
  };

  const user_filter_stage = {
    $match: {
      $and: [
        {
          registration_year: {
            $ne: parseInt(year),
          },
          registration_month: {
            $ne: parseInt(month),
          },
        },
      ],
    },
  };
  const user_sum_stage = {
    $group: {
      _id: null,
      total_number_of_active_users_who_did_not_register_this_month: { $sum: 1 },
      users: {
        $push: "$$ROOT",
      },
    },
  };
  const login_pipeline = [
    login_project_stage,
    login_filter_stage,
    active_users_group_stage,
    look_up_user_stage,
    project_user_stage,
    user_filter_stage,
    user_sum_stage,
  ];
  const active_users_who_were_not_registered_that_month =
    await History.aggregate(login_pipeline);
  response.active_users_who_were_not_registered_that_month =
    active_users_who_were_not_registered_that_month;
  return response;
};

問題是這個階段：

 const user_filter_stage = {
    $match: {
      $and: [
        {
          registration_year: {
            $ne: parseInt(year),
          },
          registration_month: {
            $ne: parseInt(month),
          },
        },
      ],
    },
  };

它不會過濾掉在那個月和年注冊的用戶，而是過濾掉在那個月或年注冊的用戶。

例如，如果month=7和year=2022 ，任何在 2022 年或7 月（第 7 個月）注冊的用戶將不會被退回。

但是，我只希望它過濾 2022 年和7 月（第 7 個月）注冊的用戶。

知道如何解決這個問題嗎？

Answer 1

這是解決方案：

  $nor: [
        {
          registration_year: parseInt(year),
          registration_month: parseInt(month),
        },
      ]