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Date: 11/28/01
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On Mié 28 Nov 2001 19:42, you wrote:
> Can the SUM keyword in SELECT be generalized to strings?
>
> A tipical use for the SUM keyword is:
>
> SELECT column1, SUM(column2)
> FROM table
> GROUP BY column1
>
> This works only if column2 contains numbers (and SUM is the mathematical
> sum).
>
> What about obtain the same behaviour, when column2 contains strings (and
> SUM is string concatenation)?
With which database engine?
-- Porqué usar una base de datos relacional cualquiera, si podés usar PostgreSQL? ----------------------------------------------------------------- Martín Marqués | mmarques <email protected> Programador, Administrador, DBA | Centro de Telematica Universidad Nacional del Litoral ------------------------------------------------------------------- PHP Database Mailing List (http://www.php.net/) To unsubscribe, e-mail: php-db-unsubscribe <email protected> For additional commands, e-mail: php-db-help <email protected> To contact the list administrators, e-mail: php-list-admin <email protected>
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