Re: grouping by unique...

Fei Zheng wrote:

> I'd like to have an unique solution list.  Anyone can tell what's
> wrong with the following code which gives all solutions instead of
> the unique solutions?
>               select="item[not(metadata/solution = 
> preceding-sibling::metadata/solution)]/metadata/solution"  />
You are using the preceding-sibling on the wrong element.
Try
  select="item/metadata/solution[not(. = preceding-sibling::solution)]"/>

J.Pietschmann



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