SQLAlchemy Order By: Sorting Query Results in Python

The 'orderby' method in SQLAlchemy is used to specify the ordering of the results of a query. It is used to sort the records in ascending or descending order based on one or more columns of the table.

Here is the syntax for using 'orderby' in SQLAlchemy:

query = session.query(Table).order_by(Table.column1.asc(), Table.column2.desc())

In the above example, we are sorting the records by 'column1' in ascending order and then by 'column2' in descending order.

The 'asc()' and 'desc()' methods are used to specify the ordering direction. 'asc()' is used for ascending order and 'desc()' is used for descending order.

We can also sort the records based on multiple columns. In such cases, we need to specify the order of the columns in the 'orderby' method.

query = session.query(Table).order_by(Table.column1.asc(), Table.column2.desc(), Table.column3.asc())

In the above example, we are sorting the records by 'column1' in ascending order, then by 'column2' in descending order and finally by 'column3' in ascending order.

Note that the 'orderby' method returns a new query object, so we need to assign it to a variable to use it further.