[Wikidata-bugs] [Maniphest] [Created] T153352: Blazegraph somtimes fails with NotMaterializedException when using the wikibase:label in named sub queries

[hoo]

hoo created this task. hoo added a project: Wikidata-Query-Service. Herald added a subscriber: Aklapper. Herald added projects: Wikidata, Discovery.

TASK DESCRIPTION

Minimal test case:

# Not materialized
SELECT ?langLabel ?lang
WITH {
	SELECT ?lang ?langLabel WHERE {
		BIND(wd:Q154755 AS ?lang) . # Value of ?lang doesn't matter AFAICT
		SERVICE wikibase:label { bd:serviceParam wikibase:language "en" . }
	}
} AS %LANGS
WHERE {
	INCLUDE %LANGS
}

TASK DETAIL

https://phabricator.wikimedia.org/T153352

EMAIL PREFERENCES

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To: hoo
Cc: Smalyshev, Aklapper, hoo, EBjune, mschwarzer, Avner, debt, Gehel, D3r1ck01, Jonas, FloNight, Xmlizer, Izno, jkroll, Wikidata-bugs, Jdouglas, aude, Deskana, Manybubbles, Mbch331

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