What are some advanced SQL operators I should know?
An example of an AI chatbot conversation about advanced SQL operators and their usage.
What are some advanced SQL operators I should know?
Advanced SQL operators include JOINs, UNION, INTERSECT, and EXCEPT. They help in combining and filtering data.
Can you explain how the JOIN operator works?
Sure! The JOIN operator combines rows from two or more tables based on a related column. There are different types like INNER JOIN, LEFT JOIN, etc.
What’s the difference between INNER JOIN and LEFT JOIN?
INNER JOIN returns only the rows with matching values in both tables, while LEFT JOIN returns all rows from the left table and matched rows from the right table.
Can you give me an example of using UNION?
Absolutely! UNION combines the result sets of two or more SELECT statements, removing duplicates. For example, SELECT column1 FROM table1 UNION SELECT column1 FROM table2.
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