首先在orderService中编写deleteOrderById()函数,用来根据id删除,编写getAllorder()函数,用来查询所有订单。 代码语言:javascript 复制 //根据id删除记录 public boolean deleteOrderById(int id) { Query query = new Query(Criteria.where("_id").is(id)); mongoTemplate.remove(query,order.class,"order"); ...
db.collection.deleteOne()方法的基本语法格式如下所示: db.collection.deleteOne( <filter>, { writeConcern: <document>, collation: <document> }) > db.col.deleteOne({"name":"A"}) #删除单个文档,删除name是A的文档 db.collection.deleteMany() #是删除多个文档的方法 > db.col.deleteMany({"name":...
public Page<Comment> findByUseridAndLikenum(String userid, int likenum, int page, int size) { return commentRepository.findByUseridAndLikenum(userid, likenum, PageRequest.of(page - 1, size)); } public Page<Comment> findByUseridContainingAndLikenumGreaterThanEqual(String userid, int likenu...
user1={"_id":2,"name":"wupeiqi","age":20,'hobbies':['music','read','run'],'addr':{'country':'China','city':'hebei'} } db.table1.insert(user0)# 增加一个db.table1.insertMany([user0, user1])# 增加多个 2.删(delect,remove) #1、删除符合条件的第一个文档db.user.deleteOne({...
db.user.deleteOne({id:1}) db.user.deleteMany({}) #删除所有数据 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 查询数据 MongoDB 查询数据的语法格式如下: db.user.find([query],[fields]) 1.
$mangoList = Db::connect('mongo')->table('news')->where('id','76')->update([ 'title'=>'eeeeeeeeeee' ]); 删除 $mangoList = Db::connect('mongo')->table('news')->where('id','75')->delete(); $mangoList = Db::connect('mongo')->table('news')->where('_id','6021506535...
remove()方法已经过时了,现在官方推荐使用deleteOne()和deleteMany()方法。 如删除集合下全部文档: 代码语言:txt 复制 > db.col.deleteMany({}) { "acknowledged" : true, "deletedCount" : 2 } > db.col.find() > 删除title等于 "搜云库" 的全部文档: ...
在mongos节点命令窗口中,切换至config数据库: use config 修改 balance 窗⼝的时间: db.settings.update( { _id: "balancer" }, { $set: { activeWindow : { start : "", stop : "" } } }, { upsert: true } ) 例: db.settings.update( { _id: "balancer" }, { $set: { activeWindow ...
Delete All Documents That Match a Condition The following example deletes from theorderscollection all documents that have thestatusequal toDby specifying thelimitof0: db.runCommand( { delete:"orders", deletes:[{q:{status:"D"},limit:0} ], ...
如果是删除多个,则用delete_many。(2)删除集合中的所有文档delete_many() 方法如果传入的是一个空的查询对象,则会删除集合中的所有文档:实例:import pymongo myclient = pymongo.MongoClient("mongodb://localhost:27017/") mydb = myclient["pydb"] mycol = mydb["col_set"] x = mycol.delete_many({}...