Обсуждение: update count

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update count

От
Chris Velevitch
Дата:
(for v7.4.5) How do I get the number of rows updated by an update command?


Chris
--
Chris Velevitch
Manager - Sydney Flash Platform Developers Group
www.flashdev.org.au

Re: update count

От
John DeSoi
Дата:
On Dec 18, 2005, at 3:50 AM, Chris Velevitch wrote:

> (for v7.4.5) How do I get the number of rows updated by an update
> command?

In general, the UPDATE command tells you the number of updated rows:

Outputs

On successful completion, an UPDATE command returns a command tag of
the form

UPDATE count
The count is the number of rows updated. If count is 0, no rows
matched the condition (this is not considered an error).



http://www.postgresql.org/docs/8.1/interactive/sql-update.html



The actual details of getting this number depends on what client API
you are using to execute the UPDATE command.




John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL


Re: update count

От
"Jim C. Nasby"
Дата:
On Sun, Dec 18, 2005 at 08:55:37AM -0500, John DeSoi wrote:
>
> On Dec 18, 2005, at 3:50 AM, Chris Velevitch wrote:
>
> >(for v7.4.5) How do I get the number of rows updated by an update
> >command?
>
> In general, the UPDATE command tells you the number of updated rows:

See also
http://www.postgresql.org/docs/8.1/static/plpgsql-statements.html#PLPGSQL-STATEMENTS-DIAGNOSTICS
--
Jim C. Nasby, Sr. Engineering Consultant      jnasby@pervasive.com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461