Richard Carlier <[EMAIL PROTECTED]> wrote:
> Bonjour,
>
> "Horizontal" is not the word but I don't know how to explain... and by
> extension how to find in archive of list...
>
> Maybe an example ?
>
> I have this
> +-------+-------+
> | a | b |
> +-------+-------+
> | 1 | 1 |
> | 1 | 2 |
> | 1 | 3 |
> | 2 | 1 |
> | 2 | 2 |
> | 3 | 1 |
> +-------+-------+
>
> Their is any why to obtain something like that :
> +-------+--------+
> | a | b |
> +-------+--------+
> | 1 | 1,2,3 |
> | 2 | 1,2 |
> | 3 | 1 |
> +-------+--------+
>
> Based on a group by or something...
There is GROUP_CONCAT() function:
http://www.mysql.com/doc/en/GROUP-BY-Functions.html
But it's supported from version 4.1.
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