Lucas_Werkmeister_WMDE added a comment. |
Ugh, I should’ve remembered that, I’m pretty sure I ran into that problem before… thanks.
But that still leaves one case that I think is incorrect:
If the UNION is removed, it correctly yields one nonempty result.
That is:
SELECT ?item WHERE { ?_item a schema:Dataset. { BIND( ?_item as ?item ) } }
This returns wikibase:Dump in ?item, but shouldn’t it result in one result with empty ?item, just like this query?
SELECT ?item WHERE { ?_item a schema:Dataset. }If the subgroup is evaluated first, then there shouldn’t be anything to bind as ?item.
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