SELECT colName1, colName2, colName3
FROM tableName s1
WHERE colName3=(SELECT MAX(s2. colName3)
FROM tableName s2
WHERE s1. colName1= s2. colName1)
ORDER BY colName1;
假设我们有以下产品表 -
+---------+----------+--------+
| Article | Warehouse| Price |
+---------+----------+--------+
| 1 | North | 255.50 |
| 1 | North | 256.05 |
| 2 | South | 90.50 |
| 3 | East | 120.50 |
| 3 | East | 123.10 |
| 3 | East | 122.10 |
+---------+----------+--------|
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以下是查询 −
查询
SELECT Article, Warehouse, Price
FROM Product p1
WHERE Price=(SELECT MAX(p2. Price)
FROM Product p2
WHERE p1. Article= p2. Article)
ORDER BY Article;
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输出
+-------------+----------------+------------+
| Article | Warehouse | Price |
+-------------+----------------+------------+
| 0001 | North | 256.05 |
| 0002 | South | 90.50 |
| 0003 | East | 123.10 |
+-------------+----------------+------------+
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上面的查询使用了相关子查询。
以上就是MySQL 中保存某一列的分组最大值的行的详细内容，更多请关注每日运维网(www.mryunwei.com)其它相关文章！
