如何轉換包含貨幣符號的varchar價格列，然後求和它？

Question

我有一個名爲tbl_procie表，該表具有以下結構：

CREATE TABLE `tbl_procie` (
    `id` int, 
    `price` varchar(25) 
); 

數據：

id price 
1 $2.5 
2 $5.3 

我希望能夠SUM()價格但它是目前varchar列還包含貨幣符號。我應該得到答案7.8。

Answer 1

SELECT SUM(REPLACE(price,'$','')) AS cr 
FROM TABLENAME 
WHERE Valet_Company = "Demo Company" 

Answer 2

嘗試如下：

select sum(cast(price as double)) from tbl_temp 

Answer 3

SELECT SUM(price) AS [Price Total] FROM tbl_temp

或者，如果那不刪除$符號自動嘗試

SELECT SUM(TRIM(LEADING '$' FROM price)) AS [Price Total] FROM tbl_temp