DOCS-13941-collstats-error (#433) (#440)

* DOCS-13941-collstats-error

* DOCS-13941-collstats-error

Co-authored-by: jason-price-mongodb <[email protected]>

Co-authored-by: jason-price-mongodb <[email protected]>

Author: jason-price-mongodb

source/reference/command/collStats.txt

@@ -112,6 +112,31 @@ Replica Set Member State Restriction
 
 .. |operations| replace:: :dbcommand:`collStats`
 
+Non-Existent Collections
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+If you run :dbcommand:`collStats` for a non-existent collection, then
+depending on your database implementation, :dbcommand:`collStats` might
+return ``0`` values in the output fields instead of returning an error.
+
+For example:
+
+.. code-block:: javascript
+
+   db.runCommand( { collStats : "nonExistentCollection" } )
+
+Example output with ``0`` values in the fields:
+
+.. code-block:: javascript
+   :copyable: false
+
+   {
+      ns: 'test.nonExistentCollection',
+      size: 0,
+      count: 0,
+      ...
+   }
+
 Example
 -------