What are SQL joins and how are they used in analytics?
An example of an AI chatbot conversation about SQL joins in analytics.
What are SQL joins and how are they used in analytics?
SQL joins are used to combine rows from two or more tables based on a related column. In analytics, they help in merging datasets to extract meaningful insights.
Can you explain the different types of SQL joins?
Sure! The main types of SQL joins are INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN. Each serves a different purpose in combining data.
What is an INNER JOIN and when should I use it?
An INNER JOIN returns only the rows that have matching values in both tables. Use it when you want to find records that exist in both datasets.
Can you give me an example of a LEFT JOIN?
Absolutely! A LEFT JOIN returns all records from the left table and the matched records from the right table. If there's no match, NULL values are returned for columns from the right table.
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