Filing this here, since I'm not sure if it's a configuration bug or upstream bug, and it's worth tracking either way.
Doxygen says, " If the INHERIT_DOCS tag is set to YES then an undocumented member inherits the documentation from any documented member that it re-implements. The default value is: YES."
This is explicitly set in maintenance/Doxyfile, but I'm not sure if this is the same Doxyfile we use for doc.wikimedia.org (but hopefully it is).
It doesn't seem to work, e.g.:
The above is missing docs for methods like "select()"
.. which are inherited from Database, and shown at: