Tag: SQL

Python – INNER/LEFT/RIGHT JOIN like SQL in pandas When in the business, I often come across cases where data must be obtained directly from the data lake and preprocessed. Therefore, I think there are many opportunities to process large amounts of data with pandas. So, this time, I would like to record an INNER/LEFT/RIGHT JOIN … Continue reading “Python – INNER/LEFT/RIGHT JOIN like SQL in pandas”

Python – List string with pandas groupby If you are doing business, you may have to acquire data directly from the data lake. Therefore, I think there are many opportunities to process large amounts of data with pandas for preprocessing. So, this time, although it is used less frequently, I would like to record a … Continue reading “Python – List string with pandas groupby”