Auto increment with string like Cus01,Cus02,Cus03......

Question

3.00/5 (1 vote)

See more:

SQL

Sir,
I want to increment my Field Value in databaselike CUS01,cus02..

Posted 27-Jun-11 21:57pm

manasBonton

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Christian Graus · Answer 1 · 2011-06-27T22:08:00

Solution 1

OK, well, what have you tried ? Your values are strings ? They can't auto increment, you'd have to write code to do it, like perhaps a trigger ? You've failed to tell us much of anything, so it's hard to know what you want.

Posted 27-Jun-11 22:08pm

Christian Graus

Pete O'Hanlon · Answer 2 · 2011-06-27T22:19:00

Solution 2

Typically you shouldn't think of doing this in this way. What you might want to consider, as an alternative, is to just have an auto incrementing value, and then you can just add this to the prefix string after you've retrieved it.

Posted 27-Jun-11 22:19pm

Pete O'Hanlon

OriginalGriff · Answer 3 · 2011-06-27T22:19:00

It's not that simple: strings cannot be autoincremented by the database only integers. Plus there are other problems.

I assume that you want to create customer codes such as CUS01, CUS02, ANC01, ANC02, so you will have to work out what happens when you already have CUS99 and want the next one... You also have to be very careful about multiuser problems.

There are two safe ways to do it: moving your INSERTs to a stored procedure, and working out the new value there, or create a stored procedure which takes the "CUS" part and returns the next available name. To support this, I would have a separate table containing a string for the CUS part, and the last value used for that string. The stored procedure reads the row, updates the value, and writes it back befoire returnign teh new string complete.

Me? I would go the second route.