Extracts an update element: query (q), update operator (u),
and option upsert
and multi
.
Extracts an update element: query (q), update operator (u),
and option upsert
and multi
.
Matches value of the following form:
{ "q": { .. }, "u": { .. }, "upsert": true, "multi": false }
(q, u, upsert, multi)
Update request