[root@sunrise16 bin]#


./mongo

MongoDB shell version: 2.0.0

connecting to: test

插入一个带有数组元素的文档

>

db.food.insert({"fruit": ["apple", "banana", "peach"]})


>

db.food.find()


{ "_id" : ObjectId("4ea6a4ef0b12b1d429b4057f"), "fruit" : [ "apple", "banana", "peach" ] }

查询数组元素中包含某个值的文档

>

db.food.find({"fruit": "banana"})


{ "_id" : ObjectId("4ea6a4ef0b12b1d429b4057f"), "fruit" : [ "apple", "banana", "peach" ] }

>

db.food.find({"fruit": {"$all": ["banana"]}})


{ "_id" : ObjectId("4ea6a4ef0b12b1d429b4057f"), "fruit" : [ "apple", "banana", "peach" ] }

查询匹配指定数组的文档。注意要完全相同，数量和顺序都不能有错，否则找不到

>

db.food.find({"fruit": ["banana"]})


>

db.food.find({"fruit": ["apple", "banana", "peach"]})


{ "_id" : ObjectId("4ea6a4ef0b12b1d429b4057f"), "fruit" : [ "apple", "banana", "peach" ] }

>

db.food.find({"fruit": ["banana", "apple", "peach"]})

查询数组元素中包含多个指定值的文档，全部包含，顺序无关

>

db.food.find({"fruit": {"$all": ["banana", "apple", "peach"]}})


{ "_id" : ObjectId("4ea6a4ef0b12b1d429b4057f"), "fruit" : [ "apple", "banana", "peach" ] }

查询包含多个值之一的文档

>

db.food.find({"fruit":["banna","cherry"]})


>

db.food.find({"fruit":{"$all":["banna","cherry"]}})


>

db.food.find({"fruit":{"$in":["banna","cherry"]}})

查询指定长度的数组。但不能查询指定长度范围的数组

>

db.food.find({"fruit": {"$size": 3}})


{ "_id" : ObjectId("4ea6a4ef0b12b1d429b4057f"), "fruit" : [ "apple", "banana", "peach" ] }

>

db.food.find({"fruit": {"$size": 2}})


>

db.food.find({"fruit": {"$size": 4}})

模糊查询：

db.collname.find({"actors.name":/Catterfeld/i}, {"tag":1,"_id":1,"actors":1})

参考推荐：

MongoDB查询(数组、内嵌文档和$where)

mongodb 常用命令

MongoDB 查询上