After passing through the aggregate function in mongo: group (), the DBObject object is returned. what should I do if I want to store it in another set? ? ?
Later, I knew for myself that it was ok to put it directly into a document and insert it into the collection. .
Related Posts:
PHP randomly comes up with a combination of numbers…
How does mongodb group data and then get the largest…The results of group by in mysql5.7 and group by in…
- After Mongo group is grouped, how to sort the…
- Resolved: delete values and group by can query the…
- Is it better to use mysql built-in functions to…
- Is there any way to store or export mongodb's…
- How does mongoose handle multi-level circular…
Mysql group by grouping problem.