Difference between INNER JOIN and LEFT JOIN in MySQL

In MySQL, INNER JOIN and LEFT JOIN are two types of SQL joins used to combine data from multiple tables. The main difference between them is how they handle unmatched rows:

INNER JOIN:

An INNER JOIN returns only the rows where there is a match between the columns in both tables being joined. If there is no match, the rows are not included in the result set.

LEFT JOIN:

A LEFT JOIN returns all rows from the left table (the table on the left side of the JOIN keyword), along with matching rows from the right table. If there is no match for a row in the right table, NULL values are returned for the columns from the right table.

Overall, the key difference is that INNER JOIN only includes matching rows, while LEFT JOIN includes all rows from the left table and matching rows from the right table.

When choosing between INNER JOIN and LEFT JOIN in MySQL, consider the data you want to retrieve and how you want to handle unmatched rows in your result set.