Можно ли заменить right join на left join, изменяя порядок таблиц в SQL-запросе?

Yes, you can replace RIGHT JOIN with LEFT JOIN by changing the order of tables in the SQL query.

RIGHT JOIN returns all records from the right table and the matching records from the left table. Similarly, LEFT JOIN returns all records from the left table and the matching records from the right.

If you have a query with RIGHT JOIN:

SELECT * FROM A RIGHT JOIN B ON A.id = B.a_id;

It can be rewritten as:

SELECT * FROM B LEFT JOIN A ON A.id = B.a_id;

Thus, by swapping the tables and the type of join, you will get an equivalent result.

This is useful because LEFT JOIN is more commonly used and better supported across different DBMSs, and it also improves code readability.