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
該查詢給我造成像如何在查詢中只乘以一行?
Curreny totalPrice
SEK 10
USD 10
我想從7只乘以SEK 我在數據庫中唯一美元率,所以我要乘以查詢與得到SEK率。我如何在這個查詢中做到這一點?
你是什麼意思,因爲我有點糊塗了? *我想只乘以7瑞典克朗。我在數據庫中只有美元匯率,所以我想在查詢中乘以7以獲得瑞典克朗匯率。* – 2013-03-17 09:53:10