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[英]How do I SELECT the ROW with Highest Value in a Query with SUM() and JOIN?
[英]How to select the row with highest value from the result of an existing query?
我有一个SQL查询,它返回结果列表。 的SQL是:
SELECT fcategory,sum(fquantity*fprice) AS qty FROM items GROUP BY fcategory
输出是这样的
----------------
category|qty
----------------
a | 10
b | 100
c | 554
根据上述sql语句的结果,如何检索最大数量的行? (在这种情况下,我希望查询仅返回“ c”)
您可以按+限制1添加订单以获取此信息:
SELECT fcategory,sum(fquantity*fprice) AS qty FROM items GROUP BY fcategory
order by qty desc limit 1
为了获取最高数量,只需获得第一个按数量排序的结果:
SELECT * FROM items ORDER BY qty desc limit 1
就您自己而言,
SELECT fcategory,sum(fquantity*fprice) AS qty FROM items GROUP BY fcategory ORDER BY qty LIMIT 1
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