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I am working on ASP.Net using C# I want to generate a sequence id that should be like this:
ELG0001 , ELG0002, ...

ELG is the PREFIX and 0001 should be in sequence.

I am using sql server 2005. This id will be generated and added to my database. how can i do?
Updated 24-Jul-10 21:02pm

1 solution

Create an ID field in your database. Keep it as Integer type and auto-increment by 1 each time. (this can be done in DB very easily while setting up a table!)

Now since, its just the fixed letter 'ELG', append that whenever you are using them either in query while fetching data or in UI while using it whereever suits you.

Create an ID, TempID field in your database. Keep ID field as nvarchar(10) type and TempID field as Ineger type and auto-incrementable by 1.

Now, at the time of inserting record in table:
    1. You can put up on ID field that insert "ELG"+TempID.
    2. OR You can use TRIGGER to insert value

For having sequential numbers, you can have any logic you like. You can even pass it from frontend.
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