We want to provide a global list of constraint violations: some special page where you can ask for all violations (across all entities) of a certain constraint, or of all constraints of a certain property. (The last case is similar to the current Wikidata:Database reports/Constraint violations created by KrBot.)

The idea is to implement this on top of T179849: Cache all constraint check results per-entity: we cache constraint violations in a database table, along with information which constraint violations are recorded in each row, and then the special page can retrieve all violations of constraints from that table. Initially, this only includes results from entities where constraint checks were requested at some point, but we can probably address that later.

Old content of this ticket (to which Lydia’s comment is a response):

Do we want to provide a global list of constraint violations? I. e., something like the existing Wikidata:Database reports/Constraint violations created by KrBot.

If we want to do this, it will probably take a while before we can implement it, but I think this is a factor we need to consider when deciding on how to implement T179839: Cache constraint check results, so we should consider it now. In that case, we should probably store cached check results in the database instead of in memcached, and also index them on the necessary fields so we can find them later.