From `db1070`:
KEY `wb_ips_site_page` (`ips_site_page`),
This is useful for queries where we want to find a given linked page by title (like "Berlin"), but don't know the site id (like "enwiki"). We don't do these kinds of queries within the software and I can barely imagine a purpose for this.
The only way to use this via Wikibase is `SiteLinkLookup::getLinks` which allows for such queries to be crafted (but no one does this currently). The method states:
```
Note: if the conditions are not very selective the result set can be very big.
* Thus the caller is responsible for not executing too expensive queries in its context.```
If we want, we could make the implementations of `getLinks` throw if `$siteIds` is not set, but I'm not sure that's even needed here (as per the above comment).
Progress:
eqiad:
[] labsdb1001.eqiad.wmnet
[] labsdb1003.eqiad.wmnet
[] labsdb1009.eqiad.wmnet
[] labsdb1010.eqiad.wmnet
[] labsdb1011.eqiad.wmnet
[] db1095.eqiad.wmnet
[x] dbstore1001.eqiad.wmnet
[x] dbstore1002.eqiad.wmnet
[] db1070.eqiad.wmnet
[] db1071.eqiad.wmnet
[] db1082.eqiad.wmnet
[] db1087.eqiad.wmnet
[] db1092.eqiad.wmnet
[] db1096.eqiad.wmnet
[] db1099.eqiad.wmnet
[] db1100.eqiad.wmnet
[] db1104.eqiad.wmnet
[] db1106.eqiad.wmnet
[] db1063.eqiad.wmnet
[x] codfw