INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

DB2 SQL Syntax for CASE Statement

DB2 SQL Syntax for CASE Statement

(OP)
Hello ...

I'm looking for some advice on how to handle the following task.

I'm trying to get a value to display if the original value is NULL.  Here is my SQL:

CODE

      CASE (B.USR_R_NM)                                              
           WHEN X'60'                                                
           THEN '***USER ' || RTRIM(A.USER_ADD_ID) || ' DELETED***'
           ELSE B.USR_R_NM                                           
      END AS USER_NM,       
     

Here is the value for this 27-byte field:

CODE

-                          
644444444444444444444444444
000000000000000000000000000
I've also tried

CODE

      CASE (B.USR_R_NM)                                              
           WHEN NULL                                                 
           THEN '***USER ' || RTRIM(A.USER_ADD_ID) || ' DELETED***'
           ELSE B.USR_R_NM                                           
      END AS USER_NM,                                                

However neither option seems to work successfully for me.

I would appreciate any feedback.

Thanks in advance!

RE: DB2 SQL Syntax for CASE Statement

Why don't you google for "COALESCE"?

CODE

select COALESCE(B.USR_R_NM,'USER DELETED' from ...

RE: DB2 SQL Syntax for CASE Statement

(OP)
Hi everyone ...

Just an update, I found the following seems to work and uses the CASE statement:

CODE

CASE WHEN B.USR_R_NM IS NULL                                     
     THEN '*** USER ' || RTRIM(A.USER_ADD_ID) || ' DELETED ***'
     ELSE B.USR_R_NM                                             
 END AS USER_NM,

Thank you again for the suggestions!

RE: DB2 SQL Syntax for CASE Statement

You do not need a case whatsoever when you learn what Coalesce does..

Ties Blom
 
 

RE: DB2 SQL Syntax for CASE Statement

(OP)
I couldn't figure out what coalesce did.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close