https://bugzilla.wikimedia.org/show_bug.cgi?id=42347

Markus Krötzsch <mar...@semantic-mediawiki.org> changed:

           What    |Removed                     |Added
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                 CC|                            |wikibugs-l@lists.wikimedia.
                   |                            |org
          Component|Semantic MediaWiki          |SemanticForms
         AssignedTo|wikibugs-l@lists.wikimedia. |yaro...@gmail.com
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--- Comment #3 from Markus Krötzsch <mar...@semantic-mediawiki.org> 2012-11-22 
11:32:01 UTC ---
If the query that I suggested works for you, it is highly recommended to use
this query instead of format=max everywhere. Similarly for format min (but
change the order to ASC there). If you want to do math with the result, you
should also specify that you do not want any formatting by adding a #-:

{{#ask: [[Category:Project]]
| ?Project number#-=
| mainlabel=-
| sort=Project number
| order=DESC
| limit=1
}}

The max format should be avoided whenever possible. It is very resource
intensive (possibly retrieving thousands of results to find one number) and may
still lead to wrong results (if there are too many matches).

The other problem you mention here seem to be related to {{{field}}} but not to
SMW. I don't see why there should be a connection to SMW 1.8, but maybe there
were some small output changes in #ask that your code is somehow sensitive to.
I am reassigning this bug to SF now.

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