What are different types of joins?

here’s a brief list of the different types of joins in ANSI-standard SQL:

1. Inner Join: Returns only the matching rows from both tables.
2. Left Outer Join: Returns all the rows from the left table and matching rows from the right table.
3. Right Outer Join: Returns all the rows from the right table and matching rows from the left table.
4. Full Outer Join: Returns all the rows from both tables, including unmatched rows.
5. Cross Join: Returns the Cartesian product of both tables (i.e., all possible combinations of rows).
6. Self Join: Joins a table to itself, typically used when a table has a hierarchical relationship.

It’s worth noting that some databases and implementations may have slightly different syntax or options for these join types.