How do you concatenate two querysets into one list?

1. How do we concatenate two query sets into one list?
2. How to use join query in Django?
3. What are QuerySets in Django?

How do we concatenate two query sets into one list?

Use union operator for queryset | to take union of two queryset. If both queryset belongs to same model / single model than it is possible to combine querysets by using union operator. One other way to achieve combine operation between two queryset is to use itertools chain function.

How to use join query in Django?

Join Queries

Join can be done with select_related method: Django defines this function as Returns a QuerySet that will “follow” foreign-key relationships, selecting additional related-object data when it executes its query.

What are QuerySets in Django?

A QuerySet is a collection of data from a database. A QuerySet is built up as a list of objects. QuerySets makes it easier to get the data you actually need, by allowing you to filter and order the data at an early stage. In this tutorial we will be querying data from the Member table.