Retrieval

In the previous lesson, we inserted elements in the database by creating objects of the models. In this lesson, we will retrieve these objects from the database using the SQLAlchemy ORM.

Common methods of retrieval in the query object #

The query object is a member variable of the Model class. This object provides us with a method to execute the SELECT statement of SQL. We can find details on all the methods that can be used on this object in the SQLAlchemy docs.

query.all() #

This method will retrieve all entries of the Model class on which it is called. A demonstration is given below.