如何转换包含货币符号的varchar price列然后求和？

Question

我有一个名为tbl_procie的表，它具有以下结构：

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

数据：

id  price
 1   $2.5
 2   $5.3

我希望能够SUM()价格，但目前它还包含货币符号的varchar列。我应该得到答案7.8。

Answer 1

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

Answer 2

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

或者，如果没有自动删除$符号，请尝试

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

Answer 3

尝试以下：

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