What are the differences between Django QuerySets and bulk operations?

What are the differences between Django QuerySets and bulk operations?

Django QuerySets are used to retrieve data from the database, allowing for filtering and chaining methods. Bulk operations, on the other hand, are used to perform actions like creating or updating multiple records at once, which can be more efficient.

Can you give me an example of when to use bulk operations?

Sure! If you need to insert a large number of records, using bulk_create() is much faster than creating each record individually with save().

Are there any downsides to using bulk operations?

Yes, bulk operations bypass some model methods like save() and pre_save signals, so you might miss out on custom logic or validation.

How do I perform a bulk update in Django?

You can use the update() method on a QuerySet to perform bulk updates. For example, MyModel.objects.filter(condition).update(field=value) will update all matching records.