Show comma instead of point as decimal separator - sql-server

Question

I just want to get the right number format here in germany, so i need to show commas as decimal separator instead of points. But this...
DECLARE #euros money
SET #euros = 1025040.2365
SELECT CONVERT(varchar(30), #euros, 1)
Displays 1,025,040.24 instead of 1.025.040,24 (or 1025040,24). In C# it would be simple to provide the appropriate CultureInfo but how to do it in T-SQL?
Do i really need to use REPLACE? But even if, how to replace 1,025,040.24 correctly?

Answer 1

To provide the appropriate culture info, in SQL 2012 there is the FORMAT() function. Here's an example:
declare #f float = 123456.789;
select
[raw] = str(#f,20,3)
,[standard] = cast(format(#f, 'N', 'en-US') as varchar(20))
,[German] = cast(format(#f, 'N', 'de-DE') as varchar(20))
returns
raw |standard |German |
---------------------|-----------|-----------|
123456.789 |123,456.79 |123.456,79 |
You can also specify in the second parameter a custom format string with the same rules as for .NET.
Docs: https://msdn.microsoft.com/en-US/library/hh213505.aspx

Answer 2

Well, as far as I know, there are no culture-specific options for convert available.
So you can do it using replaces (yes, it looks a bit ugly...)
select
replace(replace(replace(convert(varchar(30), #euros, 1), ',', '|'), '.', ','), '|', '.')
Idea: first change comma to something, then change dot to comma, and then "something" back to dot.

Answer 3

DECLARE #euros money
SET #euros = 1025040.2365
SELECT REPLACE(CONVERT(varchar(30), #euros, 0), '.', ',')
should do it (at least to get 1025040,24)

Answer 4

You could use replace something like this:
DECLARE #euros money
SET #euros = 1025040.2365
SELECT REPLACE(REPLACE(CONVERT(varchar(30), #euros, 1),',',''),'.',',');
SQL Fiddle Demo

Answer 5

You can first replace thousand separator comma(,) to a Zero length string (''), and then you can replace Decimal('.') to comma(',') in the same select statement.