Include a numeric count of the total number of results returned for the query and the total number for each category.

为查询返回结果和每个目录提供统计数量。

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MongoDB query results are stored in cursors that provide a range of functions for filtering, aggregation, and sorting including limit(), skip(), sort(), count(), distinct() and group().

MongoDB查询结果存储在提供过滤、聚合和排序等一系列功能的游标中，包括limit()、skip()、sort()、count()、distinct() 和group()。

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You can easily count the number of results from your query (see Listing 14).

很容易数清查询结果的个数(参见清单14)。

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You can easily count the number of results from your query (see Listing 14).

很容易数清查询结果的个数(参见清单14)。

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