Mongodb，在列表上創建索引

Question

是否可以在fruit子文檔的name字段上創建索引？

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

Answer 1

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