| From: | "Nick Fankhauser" <nickf(at)ontko(dot)com> |
|---|---|
| To: | "Jeff Eckermann" <jeckermann(at)verio(dot)net>, <gserrato(at)sager(dot)telecom-co(dot)net>, <pgsql-general(at)postgresql(dot)org>, "Stephan Szabo" <sszabo(at)megazone23(dot)bigpanda(dot)com> |
| Subject: | RE: Appending null produces null? AND RE: [GENERAL] NVL (sql oracle) |
| Date: | 2000-11-09 18:04:57 |
| Message-ID: | NEBBLAAHGLEEPCGOBHDGMEOKCEAA.nickf@ontko.com |
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| Thread: | |
| Lists: | pgsql-general |
Stephan Szabo wrote:
> If I'm not misremembering what NVL does, the equivalent
> is coalesce.
Sure enough!
... so the answer to the NVL question is that coalesce does it, and the
answer to Jeff Eckermann's question goes something like this:
test=> select * from hiho;
one |two
----+------
hiho|
hip |hop
|hophip
(3 rows)
test=> select one,two,coalesce(one,'')||coalesce(two,'') from hiho;
one |two |?column?
----+------+--------
hiho| |hiho
hip |hop |hiphop
|hophip|hophip
(3 rows)
Thanks Stephan!
-Nick
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Nick Fankhauser
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Ray Ontko & Co. Software Consulting Services http://www.ontko.com/
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