SELECT statement with CASE and CAST

i am trying to return a string value when a timestamp field value is null.  below is my select statement.  I am getting an error message on the data type.  Can I use the cast() as varchar to resolve?

select
first_name,
last_name,
case when table.event_id = 5 and table.timestamp isnull then 'n/a' else table.timestamp end as ad_timestamp

from XXXXXX
szadrogaAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Kent OlsenData Warehouse Architect / DBACommented:
All possible values returned in the CASE construct have to be the same datatype.

Cast the datetime/timestamp to any character (string) type and you'll be fine.


Good Luck!
Kent
0
szadrogaAuthor Commented:
where do I perform the cast() in my syntax?  I cannot get it to work
0
Kent OlsenData Warehouse Architect / DBACommented:
select
first_name,
last_name,
case when table.event_id = 5 and table.timestamp isnull then 'n/a'
else cast (table.timestamp as varchar (20)) end as ad_timestamp
from XXXXXX
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Query Syntax

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.