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Yak Posting Veteran

60 Posts

Posted - 11/01/2012 :  12:36:27  Show Profile  Reply with Quote
Hello Team

I am working on SQL Server 2008.

I have setup a table to feed the Headcount details for my reports.
in this table i have 3 main fields which i would like to focus on:

1. Phone_Login_ID - In this field i will update the phone id that the analyst uses to login to the phone and take calls.

2. Emp_ID - The ID assigned during employment

3. Analyst_Status - In this field i will updated the status as "Active" if the analyst is with the company else "Inactive"

Scenario - The Phone_Login_ID will get reassigned to a new joinee once an Employee leaves the company.

So lets say that my table will be like below.

Phone_Login_ID Emp_ID Status
43512 100 Inactive
43512 200 Active

So if by mistake i try to make the following insert

INSERT INTO hc_table (Phone_Login_ID, Emp_ID, Status)
VALUES (43512, 300, Active)

My requirement is:
it should through an error as there is already an Active user using 43512 (Phone ID)

How can i go about doing this?

Ewan Gilby

Professor Frink

1421 Posts

Posted - 11/01/2012 :  13:03:57  Show Profile  Visit mfemenel's Homepage  Reply with Quote
Check out the merge statement in books online. That would be the cleanest way to do it.

"oh, that monkey is going to pay"
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Flowing Fount of Yak Knowledge

5155 Posts

Posted - 11/01/2012 :  13:13:06  Show Profile  Reply with Quote
If you are on SQL 2008 or later, create a unique filtered index like this:
    ON dbo.YourTableName (Phone_Login_ID, Status)
    WHERE Status = 'Active' ;
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Yak Posting Veteran

60 Posts

Posted - 11/05/2012 :  00:06:34  Show Profile  Reply with Quote
Thanks for the suggestions.. it helped :)

Ewan Gilby
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