The command used to delete a single document is db.collection.deleteOne(). If you want to delete more than one document, use db.collection.deleteMany() instead. If you wish to delete an entire collection, the most efficient command is db.collection.drop().
Document deletion has features in common with both update and query operations. There are two arguments: the filter, which is the same as described in the preceding section on updates. The second argument consists of options, which are a limited subset of the options available during an update: only the writeConcern and collation options are supported by a delete operation.
The following diagram maps out the generic syntax for the db.collection.deleteOne() shell method:
For the purposes of illustration, let's turn our attention back to the learn database featured in the first section in this chapter on inserting documents. First, we use the load() shell helper method to restore the sample data for the learn...
