Add 0 front of number SQL server 2k8

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SQL-Server-2008R2

i have column SL nvarchar(5) from tablename

SL SL
1/2 1/2
3 --> 03
23 23
5 05

select

JavaScript

(replace(left(REPLACE(STR(sl,3),' ','0'),1),'0','')+
			right(REPLACE(STR(sl,3),' ','0'),2)) as slmax

from tablename

What I have tried:

but didn't work ,i can't solve 1/2 with SL(nvarchar). helps me

Posted 8-Aug-16 21:48pm

Member 12676820

Updated 8-Aug-16 22:05pm

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Kornfeld Eliyahu Peter 9-Aug-16 3:51am

Not clear what you are expecting...
First of all it seems that you are working with strings (as 1/2 is number only for you, but for SQL it is a string)...
You should edit the question and show clearly what output you expect on what input...

Member 12676820 9-Aug-16 4:26am

(replace(left(REPLACE(STR(sl,3),' ','0'),1),'0','')+right(REPLACE(STR(sl,3),' ','0'),2)) as slmax -> it's ok type number, but with "1/2" nvarchar-> error
when i use type SL(nvarchar) but result can't converting data type nvarchar to float.

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OriginalGriff · Answer 1 · 2016-08-08T22:05:00

Don't do this in SQL: do it in your presentation software where it's a lot simpler as you will have much better string handling and data conversion facilities.
In C# for example, it's pretty trivial: Try to convert the string to an integer: if it fails, leave it alone. If it succeeds, convert that to a string with at least two digits:

C#

int x;
string result = int.TryParse(input, out x) ? x.ToString("D2") : input;

This is a presentation function, not a data storage function, and should be handled as such.
Just because it could be done in SQL doesn't mean it should!