dbref
Find orhphaned DBRef in collection
Is there any easy way to find orphaned references in query? I\'ve got a collection of elements hav开发者_StackOverflow中文版ing parent reference. After some parents was removed I\'d like to search ele[详细]
2023-04-12 22:05 分类：问答Finding documents by array of DBRefs
The solution is probably staring me in the face, but I haven\'t had any luck in finding it.My problem is that I need to find all documents which contain specified DBRef.Here\'s the structure of the co[详细]
2023-03-23 02:17 分类：问答How to query mongodb with DBRef
suppose I have the following da开发者_如何学JAVAtastructure: var user = {_id: \'foo\', age: 35};[详细]
2023-03-09 09:42 分类：问答I'm studying Morphia, but confused with the DBRef
1 @Entity public class Blog { @Id ObjectId id; @reference User author; String content; } or 2 @Entity public class Blog {[详细]
2023-03-07 08:19 分类：问答How to manually create a DBRef using pymongo?
I want to create a DBRef manually so that I can add an additional field to it.However, when I try to pass the following:[详细]
2023-01-03 22:18 分类：问答Can DBRefs contain additional fields?
I\'ve encountered several situations when using MongoDB that require the use of DBRefs.However, I\'d also like to cache some fields from the referenced document in the DBRef itself.[详细]
2022-12-31 14:34 分类：问答2018五一游玩攻略杭州？
mediamx 2022-04-29 16:11 开发者_C百科 杭州是浙江省的省会城市，那么大家知道2018年五一应该怎么游玩杭州吗？接下来这篇指南将告诉你答案。操作方法01杭州最出名的就是西湖，到了杭州游玩一定要到西湖逛逛，西[详细]
2022-12-23 08:52 分类：问答隐形牙齿多少钱啊？？
王小琛 2022-05-30 08:23 开发者_运维百科牙齿排列拥挤作正畸一般需要拔牙，好空出牙齿重新排列的空间。牙龈萎缩应该及时洁牙。成人正畸需要两年时间，这期间每个月复诊一次，洁牙的费用是100元/次，正畸的费用[详细]
2022-12-18 16:36 分类：问答
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