What are the joins in SQL Difference between abstraction and interference

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Accepted Answer

Joins in SQL are used to combine rows from two or more tables based on a related column between them.

Joins in SQL include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.
INNER JOIN returns rows when there is at least one match in both tables.
LEFT JOIN returns all rows from the left table and the matched rows from the right table.
RIGHT JOIN returns all rows from the right table and the matched rows from the left table.
FULL JOIN returns rows when there is a match in one of the tables.
Abstraction is hiding the implementation details while providing the essential features. Interference is drawing conclusions based on incomplete information.

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