How to get the max no in varchar and increment by 1

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In SQL Server database I there is a field which datatype is varchar(20).
Every data insert with a prefix EMB. Suppose I have three data in the field. These are
MBA00001
MBA00002
MBA004042
MBA00500

Here the max number is MBA004042 but the query
select max(TraRentAsset) as TraRentAsset from RentInfo brings MBA00500.
How can I define the MBA004042 and increment 1. The result will be now MBA004043.
Please help me. I will be very grateful to you.

Posted 1-Dec-14 16:51pm

Sumon562

Updated 2-Dec-14 17:18pm

v2

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3 solutions

Solution 1

SQL

select top 1 TraRentAsset from RentInfo
order by cast(SUBSTRING(TraRentAsset, 4, LEN(TraRentAsset)) as int) desc

DEMO[^]

Posted 1-Dec-14 17:18pm

DamithSL

v2

Comments

Sumon562 2-Dec-14 1:06am

It shows conversion error

DamithSL 2-Dec-14 1:10am

I'm not sure about your inputs. do you have null values in your column? or values not having above format?

Solution 2

Use this..

SQL

select max(substring(isnull(TraRentAsset,'MBA0'),4,len(isnull(TraRentAsset ,'MBA0'))))+1

Posted 1-Dec-14 18:45pm

/\jmot

Comments

Sumon562 2-Dec-14 22:22pm

It arises the following error
Msg 245, Level 16, State 1, Line 1
Conversion failed when converting the varchar value 'T00006' to data type int.

/\jmot 3-Dec-14 0:05am

T00006?
where you get this??

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Shweta N Mishra · Accepted Answer · 2014-12-01T21:36:00

Solution 3

check this

SQL

Create table #file(col1 varchar(20))
insert into #file select 'MBA00001'
insert into #file select 'MBA00002'
insert into #file select 'MBA004042'
insert into #file select 'MBA00500'

select  'MBA'+Convert(Varchar(20),MAX(convert(int,REPLACE(col1,'MBA','')))) from #file

Posted 1-Dec-14 21:36pm

Shweta N Mishra

Comments

Sumon562 2-Dec-14 22:21pm

It shows the following error
Msg 245, Level 16, State 1, Line 1
Conversion failed when converting the varchar value 'RENT00003' to data type int.

Shweta N Mishra 5-Dec-14 3:52am

it works for me what you code you have written ?