mongodb数组子集查询

Question

｛
'user_name':'xiaoming',
'books':['java','c++','php','python','js','html','android']
｝
查询的时候，怎么只返回books数组中，'c++'后面的3个元素？

Answer 1

"The Definitive Guide to MonogDB" Second Edition 61 pages
It is recommended to read more books

Answer 2

db.test.find({},{"books":{"$slice":[2,3]}})