Mongodb，在列表上创建索引

Question

是否可以在fruit子文档的name字段上创建索引？

{                    
    "trees": 5, 
    "fruit":[{"name":"apple", "color":"red"}, {"name":"pear", "color":"green"}] 
} 

Answer 1

db.yourCollection.ensureIndex({"fruit.name":1})