当前位置：首页 > news >正文

【sql】MongoDB 增删改查高级用法

news 2025/8/6 11:04:24

相关使用文档

MongoDB Query API — MongoDB Manual

https://www.mongodb.com/docs/manual/reference/sql-comparison

//增
//新增数据2种方式
db.msg.save({"name":"springboot😀"});
db.msg.insert({"name":"mango good"});
db.msg.save({"name":"springboot",type:"工具书", json:{id:1, name:'张三'}});//批量新增
db.msg.insertMany([
{"name":"springboot1",type:"工具书", user:{id:1, name:'张三'}},
{"name":"springboot2",type:"语文书", user:{id:2, name:'李四'}},
{"name":"springboot3",type:"数学书", user:{id:3, name:'王五'}},
]
);//循环添加数据
var b = 0
while (b <= 100000) {
//db.msg.save({indexa:b, "name":"springboot",type:"工具书", json:{id:1, name:'张三'}});db.msg.insertMany([{"name":"springboot1",type:"工具书", user:{id:b+1, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+2, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+3, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+4, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+5, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+6, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+7, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+8, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+9, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+10, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+12, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+13, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+14, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+15, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+16, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+17, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+18, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+19, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+20, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+21, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+31, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+4, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+5, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+6, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+7, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+8, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+9, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+10, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+12, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+13, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+14, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+15, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+16, name:'王五'}},{"name":"springboot1",type:"工具书", user:{id:b+17, name:'张三'}},{"name":"springboot2",type:"语文书", user:{id:b+18, name:'李四'}},{"name":"springboot3",type:"数学书", user:{id:b+19, name:'王五'}},]
);b = b+30
}//删除//（1）删除
db.msg.remove({type:"工具书"})
//（2）删除所有
db.msg.remove({})db.msg.remove({"json.id":1})//修改
//（1）update首条
//update:遇到满足条件的第一条数据修改
db.msg.update({"name":"springboot"},{$set:{"name":"springboot2"}})//（2）update多条
//updateMany :修改所有满足条件的
db.msg.updateMany({"name":"springboot"},{$set:{"name":"springboot2"}})db.msg.updateMany({"json.id":1},{$set:{"name":"springboot2"}})//（3）updateOne
//updateOne:修改满足条件的第一条数据
db.msg.updateOne({"name":"springboot2"},{$set:{"name":"springboot3"}})//查询所有数据2种写法
db.msg.find()
db.getCollection("msg").find()//查询数量
db.msg.find().itcount()//条件查询
db.msg.find({type:"工具书"})db.msg.find({"json.id":1})//分页查询   
//第一页  每页3条
db.msg.find({"user.id":1}).skip(0).limit(3)//第二页  每页3条
db.msg.find().skip(3).limit(3)//第三页  每页3条
db.msg.find().skip(6).limit(3)//排序
db.msg.find({"user.name":'张三'}).skip(200000).sort({ 'user.id':-1}).limit(30)db.msg.find({"user.name":'张三'}).sort({ 'createDate':-1}).skip(0).limit(100)
db.msg.find({"user.id":99994}).sort({ 'createDate':-1}).skip(0).limit(100)
db.msg.find().sort({ 'createDate':1}).skip(0).limit(100)db.msg.find({'createDate':{$gt:ISODate("2023-08-24T03:43:37Z")}}).sort({ 'createDate':1}).skip(0).limit(100)db.msg.find({'createDate':{$gt:ISODate("2023-08-24T03:43:37Z")}}).count()//条件
db.msg.find({"user.name":'张三',  'indexa': {$gt:3}}).skip(1000).sort({'indexa':-1}).limit(3)//聚合查询
db.msg.aggregate({"$group":{"_id":"$type","total":{"$sum":"$user.id"},"avg":{"$avg":"$user.id"}}})

查看全文

http://www.lryc.cn/news/138041.html