arrayFilter 数组中的顶级字段不能重复,如下:出现了两个 idx0,运行报错index 0: 9 - Found multiple array filters with the same top-level field name idx0 db.nestedUpdate.updateMany({}, {$set: { 'arr_1.$[idx0].c.$[idx1]': 1} }, { arrayFilters: [ {//idx0 满足条件: 需存在 c 字...
db.collection.updateMany( { <query conditions>}, { <update operator>: {"<array>.$[<identifier>]": value } }, { arrayFilters: [ { <identifier>: <condition>} ] } ) 官方文档地址:https://docs.mongodb.com/manual/reference/operator/update-array/ 如上,建立一个示例,把 arr_1.c的值改回...
db.collection.updateMany( { <query conditions>}, { <update operator>: {"<array>.$[<identifier>]": value } }, { arrayFilters: [ { <identifier>: <condition>} ] } ) 官方文档地址:https://docs.mongodb.com/manual/reference/operator/update-array/ 如上,建立一个示例,把 arr_1.c的值改回...
$: Acts as a placeholder to update the first element that matches the query condition in an update. 示例1,使用empty filter作为query filter db.users.updateMany( {}, {$inc:{"comments.$.unlikes":1}} ) 1. 2. 3. 4. MongoDB抛出错误消息: "errmsg" : "The positional operator did not fin...
condition: 3.update: db.collection.updateMany()更新满足条件的所有文本 首先得在集合中插入足够多的数据,这里我们使用mongodb官方文档提供的数据: db.inventory.insertMany([...{item:"canvas",qty:100,size:{h:28,w:35.5,uom:"cm"},status:"A"},...{item:"journal",qty:25,size:{h:14,w:21,uom...
condition={condition_field:update_data.get(condition_field)} update_operation=UpdateOne( update_operation=UpdateMany( condition, {"$set":update_data},upsert=upsert ) bulk_operations.append(update_operation) Expand DownExpand Up@@ -468,7 +468,7 @@ def get_index_key(self, coll_name, index_na...
Model.updateOne(condition,newDoc,[callback]) 修改符合条件的一个文档 Model.updateOne({name:"小明"}, { &set:{name:"大明"}}, (err)=>{ if(!err){ console.log("修改成功") } }); 1. 2. 3. 4. 5. Model.updateMany(condition,newDoc,[callback]) ...
("mldn");MongoCollection col=db.getCollection("stucol");BasicDBObject condA=newBasicDBObject("sid",0);// 数据的查询条件BasicDBObject condB=newBasicDBObject("$set",newBasicDBObject("name","SuperMan));UpdateResult result=col.updateMany(condA,condB);System.out.println(result.getMatchedCount(...
The update command modifies documents in a collection. A single update command can contain multiple update statements. The update methods provided by the MongoDB drivers use this command internally. mongosh provides the following helper methods: db.collection.updateOne() db.collection.updateMany() ...
@RunWith(SpringRunner.class)@SpringBootTestpublicclassPersonServiceTest{@AutowiredprivateMongoTemplate mongoTemplate;/** * 存储文档,如果没有插入,否则更新 * @throws Exception */@Testpublicvoidsave()throws Exception{Person person=newPerson();person.setId(13l);person.setUserName("八八");person.setPassWo...