如何使用價格*貨幣匯率對行進行分類？

Question

我有一個表屬性在MySQL與價格和currency_id列，第二個表是貨幣與id和率。

我需要Yii中CDbCriteria排序計算價格乘以currency.rate然後。

Answer 1

SELECT data_you_want, properties.price*currency.rate AS "updated_price" FROM properties, currency WHERE properties.currency_id = currency.id ORDER BY updated_price