Re: Don't want blank data

David Olbersen wrote:
>Greetings,
> Is there a way to have postgresql always return a value for each row
> requested? To be more clear, if I were using a Perl SQL hybrid I would wri
>te
> something like
>
> SELECT computer_ip or 'unset' FROM computers;
>
> So that if computers.computer_ip is NULL or '' I will get 'unset' back fro
>m
> the database. I hope this makes sense and somebody can point me in a good
> direction

SELECT COALESCE(computer_ip,'unset') AS computer_ip FROM computers;

COALESCE() returns the leftmost non-null value from its parameters.

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
PGP: 1024R/32B8FAA1: 97 EA 1D 47 72 3F 28 47 6B 7E 39 CC 56 E4 C1 47
GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839 932A 614D 4C34 3E1D 0C1C
========================================
"My little children, let us not love in word, neither
in tongue; but in deed and in truth."
I John 3:18