Last modified: 2012-08-04 00:03:33 UTC
Since probably SMW 1.7.0 the behaviour of #ask changed when querying for one page, e.g. {{#ask: [[Berlin]] | ? | ?Population | ?Area#km² | format=template | template=Query output demo }} produced "3,391,409 people squeeze into the 891.85 km² of Berlin." in SMW <1.7+, now it produces "Berlin people squeeze into the 3,391,409 of Berlin." SMW >1.7+ As you do this with #show {{#show: Berlin | ? | ?Population | ?Area#km² | format=template | template=Query output demo }} nothing changed: "3,391,409 people squeeze into the 891.85 km² of Berlin." A work-around would be {{#ask: [[Berlin]] | ?Population | ?Area#km² | format=template | template=Query output demo }} or {{#ask: [[Berlin]] | mainlabel=- | ?Population | ?Area#km² | format=template | template=Query output demo }} This may be inspected on [1]. I do not know if this is a bug since there are other ways to get the intended results. However I do not know if this was done intentionally since it breaks consistency between #ask and #show. [1] http://semantic-mediawiki.org/wiki/Help:Template_format
Markus, did you change anything that might have caused this? I'm thinking of the "allow for duplicate printouts" change. I actually remember fixing something like this two or there months back. Not sure if it broke again or if this is something else...
Heiya Markus, just a tiny assessment like "intentional / unintentional" and "will be changed / will not be changed" on this would be cool. Cheers Karsten
I think this is correct behaviour. If you add "?" as a printout request, you probably want to have it in the results, don't you? If the user explicitly adds "?", why should SMW ignore it? Or am I missing something?
There was definitively a change in behaviour to the #ask parser function in SMW 1.7.0. My assessment is that #ask was made consistent ("fixed"). Before there was a difference between querying for just one page and querying for multiple pages (which may of course have only one page as a result). The specified page is now considered as the result of the query, too. <1.7: {{#ask: [[Berlin]] |? }} → Berlin or {{#ask: [[Category:City]] }} → Berlin (in case only Berlin was added to the wiki // #ask is inconsistent {{#show: Berlin |? }} → Berlin >1.7: {{#ask: [[Berlin]] }} → Berlin or {{#ask: [[Category:City]] }} → Berlin (in case only Berlin was added to the wiki // #ask is consistent {{#show: Berlin |? }} → Berlin Nothing had to be changed for #show since the specified page will never be the result of the query. Thus I am closing this bug as RESOLVED INVALID. I will amend the documentation on the wiki accordingly. Thank you for your patience with me.
Ouch, I forgot to add the property to be queried for. I guess you still get what I meant to elaborate.
