SELECT user_id, currency, SUM(price) AS totalPrice, created
FROM accounts WHERE user_id IN (SELECT users.id FROM users
WHERE country_id ='$con_id')
AND created BETWEEN '2013-02-01' AND '2013-02-28' GROUP BY currency
该查询给我造成像如何在查询中只乘以一行?
Curreny totalPrice
SEK 10
USD 10
我想从7只乘以SEK 我在数据库中唯一美元率,所以我要乘以查询与得到SEK率。我如何在这个查询中做到这一点?
你是什么意思,因为我有点糊涂了? *我想只乘以7瑞典克朗。我在数据库中只有美元汇率,所以我想在查询中乘以7以获得瑞典克朗汇率。* – 2013-03-17 09:53:10