Filtering your INNER JOIN

Congrats on performing your first INNER JOIN! You're now going to finish this chapter with one final exercise in which you perform an INNER JOIN and filter the result using a WHERE clause.

Recall that, to INNER JOIN the Orders and Customers tables from the Northwind DB, Hugo executed the following SQL query:

"SELECT OrderID, CompanyName FROM Orders INNER JOIN Customers on Orders.CustomerID = Customers.CustomerID"

The following code has already been executed to import the neccesary packages and to create the engine:

import pandas as pd
from sqlalchemy import create_engine
engine = create_engine('sqlite:///Chinook.sqlite')

Use the pandas function read_sql_query() to assign to the variable df the DataFrame of results from the following query: select all records from PlaylistTrack INNER JOIN Track on PlaylistTrack.TrackId = Track.TrackId that satisfy the condition Milliseconds < 250000.

Take Hint (-30 XP)

Exercise

Filtering your INNER JOIN

Instructions