让我们了解如何在 MySQL 中查找每组列的最大值 -
SELECT colName1, MAX(colName2) FROM tableName GROUP BY colName1 ORDER BY colName1;
我们现在将看到一个实例。假设我们有一个表 PRODUCT -
+---------+--------+ | Article | Price | +---------+--------+ | 1 | 255.50 | | 1 | 256.05 | | 2 | 90.50 | | 3 | 120.50 | | 3 | 123.10 | | 3 | 122.10 | +---------+--------+
以下是获取每组最大列数的查询 -
SELECT Article, MAX(Price) AS MaxPrice FROM Product GROUP BY Article ORDER BY Article;
+--------------+--------------+ | Article | MaxPrice | +--------------+--------------+ | 0001 | 256.05 | | 0002 | 90.50 | | 0003 | 123.10 | +--------------+--------------+
以上是MySQL 中每组的最大列数的详细内容。更多信息请关注PHP中文网其他相关文章!