使用函數時在 Sequelize 中分組

Question

我想按函數返回的值分組，如下所示：

    let noticesOpened = NoticeOpened.aggregate(
        "id",
        "COUNT", {
            plain: false,
            where: noticeWhere,
            group: [sequelize.fn("date_trunc", "day", sequelize.col("created_at"))],
            order: [
                ["created_at", "ASC"]
            ],
        });
    return noticesOpened;

當我嘗試這個查詢時，我得到：

SequelizeDatabaseError: column "notice_opened_tbl.created_at" must appear in the GROUP BY clause or be used in an aggregate function

有沒有辦法對返回的分組值進行升序？

Answer 1

您需要根據 group 子句中的函數結果進行排序，例如：

    let noticesOpened = NoticeOpened.aggregate(
        "id",
        "COUNT", {
            plain: false,
            where: noticeWhere,
            group: [sequelize.fn("date_trunc", "day", sequelize.col("created_at"))],
            order: [
                [sequelize.fn("date_trunc", "day", sequelize.col("created_at")), "ASC"]
            ],
        });
    return noticesOpened;

我想記住你可以使用 sequelize 別名來使這更容易，但沒有語法。