On Jan 13, 2010, at 2:02 PM, Andrus Adamchik wrote:
>
> paintings.exhibits.start > $date1 AND paintings.exhibits.name like
> 'X%'
> OR
> paintings.exhibits.start < $date2 AND paintings.exhibits.name like
> 'Y%'
> OR
> paintings.exhibits.start = $date3 AND paintings.exhibits.name like
> 'Z%'
>
> here you can't describe the desired behavior with "|", but can with
> aliases:
>
> a.start > $date1 AND a.name like 'X%'
> OR
> b.start < $date2 AND b.name like 'Y%'
> OR
> c.start = $date3 AND c.name like 'Z%'
Wonder if that's a bad example though, as the intended result can be
obtained without splits... Need to think of a better one. Although the
idea is that there can be cases when exact control over joins is needed.
Andrus
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