Q4. SQL Joins implementation.

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Accepted Answer

SQL Joins are used to combine data from two or more tables based on a related column.

There are four types of SQL Joins: Inner Join, Left Join, Right Join, and Full Outer Join.
Inner Join returns only the matching rows from both tables.
Left Join returns all the rows from the left table and matching rows from the right table.
Right Join returns all the rows from the right table and matching rows from the left table.
Full Outer Join returns all the rows from both tables, with NULL values in the columns where there is no match.
The JOIN keyword is used to combine tables, and the ON keyword is used to specify the related column.
Aliases can be used to make the SQL code more readable.

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