MySQL、分组方式和最新结果

结果是：

SELECT
o.semaine AS week,
c.id AS c_id,
sr.id AS sr_id,
mr.id AS mr_id,
o.`%_RACH_distance_sup_5075m` AS rach,
o.DCR_Total_AMR AS dcr_amr
FROM
rdi.ref_cells AS c
INNER JOIN nortel.OM_Cell_week AS o ON o.cellule = c.libelle
INNER JOIN rdi.ref_sites AS sr ON sr.id = c.siteRadio_id
INNER JOIN rdi.ref_mres AS mr ON o.rnc = mr.libelle AND sr.milieuReseau_id = mr.id
INNER JOIN rdi.ref_pl AS p ON c.plaque_id = p.id
WHERE
o.date > ADDDATE(NOW(), INTERVAL - 3 WEEK) AND
o.`%_RACH_distance_sup_5075m` > 50 AND
o.DCR_Total_AMR > 1.5

我想选择本周最高的最新结果第3行和第5行。 我试图按c.id添加GROUP，但默认情况下它返回每个GROUP的第一个。

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我还试着按o.semaine下单，你指的两行不是本周最高的那一行，所以我不确定你的意思

无论如何，您始终可以使用子查询来执行这些操作。以下是选择周数最高的行的示例：

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select*from table where week=select maxweek from table

您指出的两条线不是周最高的那一行，因此我不确定您的意思

无论如何，您始终可以使用子查询来执行这些操作。以下是选择周数最高的行的示例：

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选择*from table where week=选择maxweek from table

您需要按您给字段的名称按周排序您需要按您给字段的名称按周排序它们是什么，请看第一列第一列显示值16、17、18的范围，最后一行的值为17，17<18他希望在一组c.id中获得最高周数。看第一列，第一列显示了16、17、18的值范围，最后一行的值为17，17<18他希望在一组c.id中获得最高周数。

+------+--------+-------+-------+---------+---------+
| week | c_id   | sr_id | mr_id | rach    | dcr_amr |
+------+--------+-------+-------+---------+---------+
|   16 | 117114 | 37312 |    79 | 64,1198 |  1,5018 |
|   17 | 117114 | 37312 |    79 | 67,6647 | 1,79469 |
|   18 | 117114 | 37312 |    79 | 66,6645 | 1,51302 | <- this
|   16 | 117116 | 37312 |    50 | 69,1325 |  2,3014 |
|   17 | 117116 | 37312 |    50 | 67,6647 |   1,568 | <- this
+------+--------+-------+-------+---------+---------+

SELECT  o.semaine, c.id, sr.id, mr.id
FROM    rdi.ref_cells c
JOIN    nortel.OM_Cell_week o
ON      o.id = 
        (
        SELECT  o.id
        FROM    nortel.OM_Cell_week oi
        WHERE   oi.cellule = c.libelle
                AND oi.date > ADDDATE(NOW(), INTERVAL - 3 WEEK)
                AND oi.`%_RACH_distance_sup_5075m` > 50
                AND oi.DCR_Total_AMR > 1.5
        ORDER BY
                oi.week DESC, oi.id DESC
        LIMIT 1
        )
JOIN    rdi.ref_sites AS sr
ON      sr.id = c.siteRadio_id
JOIN    rdi.ref_mres AS mr
ON      mr.libelle = o.rnc
        AND mr.id = sr.milieuReseau_id
JOIN    rdi.ref_pl AS p
ON      p.id = c.plaque_id