How to match the data from two SQL tables?

In SQL, you can use the JOIN operation to match the data from two tables. JOIN operation allows you to connect the data from two tables by specifying the relationship conditions between them.

For example, let’s say there are two tables A and B, both of which have a common column id. To match the data from these two tables, you can use the INNER JOIN operation. Here is an example code:

SELECT *
FROM tableA
INNER JOIN tableB ON tableA.id = tableB.id;

This query will return all rows in two tables where the values in the id columns are equal. The SELECT clause can be modified as needed to choose the desired columns.

Apart from INNER JOIN, there are also other types of JOIN operations such as LEFT JOIN, RIGHT JOIN, and FULL JOIN, which allow for different matching methods to be selected as needed.