medium10 pts · first answer countspythonpandasjoins
Rows after a pandas left merge
left has 3 rows with ids 1, 2, 3. right has 3 rows with ids 1, 1, 2. How many rows does left.merge(right, on="id", how="left") return?
Discussion 0
Join free to post in the discussion.
Related questions
- Which join keeps all customersData Analyst
- Rows from an INNER JOINData Analyst
- Counting missing values in pandasData Analyst
- Total sales per city in pandasData Analyst
- Revenue doubled after a joinData Analyst
- LEFT JOIN that lost customersData Analyst
- Customers who never orderedData Analyst
- Filter inside the ON clauseData Analyst