转换为有效的十进制数据类型

问题描述

我有一列 [Cash] nvarchar(50) 包含稍后将在导入过程中转换为 decimal(9,3) 的数据，其中一些数据与看起来正常的数值一致，例如 134.630,-80.662 和 324.372. 有时我的数据带有多个点，例如 1.324.372 和 -2.134.630. 有没有办法去掉这个多余的点.

I have a column [Cash] nvarchar(50) that has data that will later be converted to decimal(9,3) during an import process,some of the data is consistent with normal looking numeric values such as 134.630,-80.662 and 324.372. Occasionally I have data with multiple dots for the numeric values such as 1.324.372 and -2.134.630. Is there a way of removing this extra dot.

推荐答案

declare @yourtable table(cash varchar(20))
insert @yourtable values('1.324.372')
insert @yourtable values('-2.134.630')
insert @yourtable values('1.234.567.89')

旧代码:

select reverse(replace(replace(stuff(reverse(cash), charindex(
    '.', reverse(cash)), 1, ','), '.', ''), ',', '.')) 
from @yourtable

稍微升级的代码(结果是一样的):

Slightly upgraded code(result is the same):

select reverse(stuff(reverse(replace(cash, '.', '')), 
    charindex('.', reverse(cash)), 1, '.'))
from @yourtable

结果:

1324.372
-2134.630
1234567.89