On this page
mapReduceand the corresponding
db.collection.mapReduce(). For more information, see Map-Reduce.
$functionaggregation operations that allows users to define custom aggregation expressions.
run on the server. For more information, see
.js files via a
mongosh Instance on the Server
.js) file to
to execute the file on the server. This is a good technique
for performing batch administrative work. When you run
mongosh on the server, connecting via the localhost
interface, the connection is fast with low latency.
- For a
mongodinstance by passing the
--noscriptingoption on the command line or setting
Refer to the individual method or operator documentation for any concurrency information. See also the concurrency table.
expressions and from MozJS-60 to MozJS-91. Several deprecated,
non-standard array and string functions that existed in MozJS-60 are
removed in MozJS-91.
For the complete list of removed array and string functions, see the 6.0 compatibility notes.