How many types of sql joins does mysql supports?
MySQL supports four types of SQL joins: inner join, left join, right join, and full outer join. Here's a brief explanation of each type:

1. Inner join: Returns only the matching rows between the two tables based on the specified condition.
2. Left join: Returns all the rows from the left table and matching rows from the right table based on the specified condition. If there is no match in the right table, the result will contain NULL values.
3. Right join: Returns all the rows from the right table and matching rows from the left table based on the specified condition. If there is no match in the left table, the result will contain NULL values.
4. Full outer join: Returns all the rows from both tables, matching rows where available, and NULL values where there is no match.

Note that MySQL also supports a cross join, which is not technically a join type, but rather a cartesian product of the two tables. A cross join returns all possible combinations of rows between the two tables.