Question : SQL awkward behaviour (urgent)

Hi  All

Below I have attached the code where im getting some problem.

This will first create a temp table named #t1 with one column c1 with data as follows:
3A
1B
2C

I need to get comma seperated string with order of numeral part (excluding last char), so I cast it like cast(SUBSTRING(c1, 0, len(c1)) as int) in order by clause.

Please run the attached query.
Now the result Im getting is a bit awkward.

@var returns '3A,'   but I was expecting '1B,2C,3A'.

Could some body tell me why such a behaviour.
Also let me know the alternate approach for this.
Please help.
 
Thanks
Vipin Goel
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create table #t1 (c1 varchar(5))

insert into #t1 values ('3A')
insert into #t1 values ('1B')
insert into #t1 values ('2C')

declare @var varchar(100)
set @var = ''

select  @var = @var + c1 + ',' 
from #t1
order by cast(SUBSTRING(c1, 0, len(c1)) as int) 

select * from #t1

select cast(c1 as varchar)
from #t1
order by cast(SUBSTRING(c1, 0, len(c1)) as int) 

select @var

drop table #t1
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Answer : SQL awkward behaviour (urgent)

Hi,

please check this
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select  @var = @var + c1 + ',' 
from #t1
group by c1, cast(SUBSTRING(c1, 1, len(c1)-1 ) as int) 
order by cast(SUBSTRING(c1, 1, len(c1)-1 ) as int)
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