Ordering in descending order by a single column

You can also use .order_by() to sort from highest to lowest by wrapping a column in the desc() function. Although you haven't seen this function in action, it generalizes what you have already learned.

Pass desc() (for "descending") inside an .order_by() with the name of the column you want to sort by. For instance, stmt.order_by(desc(table.columns.column_name)) sorts column_name in descending order.

This is a part of the course

“Introduction to Databases in Python”

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Exercise instructions

Import desc from the sqlalchemy module.
Select all records of the state column from the census table.
Append an .order_by() to sort the result output by the state column in descending order. Save the result as rev_stmt.
Execute rev_stmt using connection.execute() and fetch all the results with .fetchall(). Save them as rev_results.
Print the first 10 rows of rev_results.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Import desc
from ____ import ____

# Build a query to select the state column: stmt
stmt = ____

# Order stmt by state in descending order: rev_stmt
rev_stmt = stmt.order_by(____)

# Execute the query and store the results: rev_results
rev_results = ____

# Print the first 10 rev_results
print(____)

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