| Smalyshev added a comment. |
I'm not sure what you mean by "proper indexing". If you ask to go through 2.3 millions of items, it's probably going to take time, and applying operations to it is probably not covered by index. I'm not sure maybe something can be done for prefix matches (just guessing), but for operations like "contains" I don't see any way around fetching each item and applying the operation to it.
One alternative for such queries can be using LDF endpoint: https://query.wikidata.org/bigdata/ldf?subject=&predicate=http%3A%2F%2Fwww.wikidata.org%2Fprop%2Freference%2FP854&object=
and processing the matches client-side. LDF endpoint is fast, but requires the client to load a lot of data and process it.
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Cc: Smalyshev, Aklapper, Jheald, EBjune, merbst, Avner, debt, Gehel, D3r1ck01, Jonas, FloNight, Xmlizer, Izno, jkroll, Wikidata-bugs, Jdouglas, aude, Deskana, Manybubbles, Mbch331
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