What are the different types of SQL joins?
There are several types of SQL joins: INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN. Would you like to know more about each?
Yes, please explain INNER JOIN.
INNER JOIN returns records that have matching values in both tables. For example, if you have a table of customers and a table of orders, an INNER JOIN will show only customers who have placed orders.
What about LEFT JOIN?
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.
Can you give an example of a FULL OUTER JOIN?
Sure! A FULL OUTER JOIN returns all records when there is a match in either left or right table records. If there’s no match, NULLs are shown for non-matching rows.
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