Autoincrement Sequence with String and number

Hi,
I have a db for a small company where there are different kinds of employees.
As a primary key of each table (for each type of employee), I would like to have a combination of a string and integer.
e.g. if the employee is a car mechanic then the primary key should be something like: CM001, CM002, ....
if the employee is from the it department then the primary key should be like: IT001, IT002, ....
I have found a few script for sequences and triggers to use the auto-increment, but I could not find anything about concatenating a string in front of the integer.
any help appreciated.
thanks

user5205421 wrote:
As a primary key of each table (for each type of employee), I would like to have a combination of a string and integer.You really don't want to have a combined column in your tables, and certainly not as a primary key.
If you use a combined column you'll find your are uncombining the column all over your application using substr's, index usage will not be trivial anymore, people can't change from departments anymore since primary keys can never change. You are just asking for trouble. When your customer says that that's the number/code they want to see and with which they identify themselves, that doesn't mean you need to implement it as a primary key.
My advice:
- create an ID column with a primary key constraint and fill it using a sequence.
- have a department code column, optionally a foreign key to a table with departments
- use: department_code || to_char(id,'fm000') or department_code || row_number() over (partition by department_code order by id), only for display reasons in your applications, possibly in a view.
Regards,
Rob.

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Edited by: Frank Kulash on Jan 22, 2009 2:31 PM
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Regards
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Adding caller with name and number from call list to the contact list only inserts the number and not the name

I recently bought a BlackBerry Z10 and moved my cell service to Rogers to take advantage of the name display service offered by Rogers (Fido also offers this service).
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It appears that you are not aware of the fact that both Rogers and Fido offer name AND number display service (although the name display feature is an add-on service) and have been offering it for many years (since 2006). Here is a link to the name display service description of each provider...
http://www.fido.ca/web/content/manageyourcalls/calldisplay&lang=en
http://www.rogers.com/business/on/en/smallbusiness/products/wireless/addons/valuepacks/
As you can see from the link below, Rogers and Fido have been offering this service since 2006.
http://www.businesswire.com/news/home/20060914005951/en/Teams-HP-Rogers-Wireless-Fido-Succeed-North
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All I would like is for the Z10 (and Q10) to support the addition of the name and number from the caller list to my contact list without me having to type the name. As I mentioned in my original post, to avoid the OS having to parse the first name and last name from the name portion of the caller list entry the name could simply be added to the contact list as a "Nickname". If your provider only has number display, nothing would have to be copied from the name variable in the caller list to the contact list.
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Marc

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You could have the original face values as integers, thus Ace = 1, Jack = 11 (it'll be easy enough to display the proper values AJQK if you keep your string array and just display whatever corresponds to the value held in your int array).
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