sqlalchemy orderby

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.