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Some large-ish filters (tag sets) of Stackexchange, grouping favorite tags of mine, (erroneously) don't return anything if I ask for 'newest' or 'no answers' sorting. For instance:

  • This one doesn't return anything for "no answers" (but it should return, e.g. : 1)
  • That one doesn't return anything for either "newest" or "no answers"

I'm not subscribed to email notices for those tagsets, so i can't tell if they have stopped coming, but the corresponding RSS feeds are empty. I have tried updating "my favorite tags", using<filterid> while logged in, to no avail (it generated a tag set whose "newest" and "no answer" sorts display nothing). This led me to think that those sorts ("newest", "no answers") are not handled/computed/updated for newly created tagsets, is that true ?

  • Edit (07/17 06:00 UTC): Now I have nothing for "newest" for the first filter either.
  • Edit (07/17 15:15 UTC): Now "newest" sorting is back for the first filter (link on the line above). The second filter set consistently has "newest" and "no answers" sorting off, though.
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“Only questions with activity in the last 14 days are included in results.”, so the first shouldn't include your example, but it should include e.g. OpenCL executing without input data or using 3 dimensions.. I see no hit on either. – Gilles Jul 16 '11 at 11:12
Thanks, I updated the counter-example question. I also updated links to tagsets to point to noanswers/newest sorting. – huitseeker Jul 16 '11 at 13:36

In both of the links provided, I see several results. Is this possibly a case of hiding ignored tags?

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The link isn't to the “no answers” sorting, do you get resulsts on ? – Gilles Jul 16 '11 at 11:13
No. But I do see pages of results when sorting by 'newest'. That listing includes questions which should show up under 'no-answers'. That sorting tab does appear broken. – M. Tibbits Jul 16 '11 at 11:18
Yeah, I mentioned the first tagset returns results for "noanswers". But the second doesn't: I bet you can't see results on – huitseeker Jul 16 '11 at 13:28
Correct. I don't see anything there either. – M. Tibbits Jul 16 '11 at 15:37

After a recent round of improvements to the SQL query backing filters, large-ish filters such as the ones linked to in this question aren't erroring any more.

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