SQL RIGHT JOIN
SQL RIGHT JOIN (or RIGHT OUTER JOIN) is a type of JOIN that returns all the rows from the right table and the matching rows from the left table. If there are no matching rows in the left table, the result will contain NULL values for those columns.
The basic syntax of an SQL RIGHT JOIN query is as follows:
refer to:theitroad.comSELECT column1, column2, ... FROM table1 RIGHT JOIN table2 ON table1.column = table2.column;
Here, table1
and table2
are the tables that you want to join, column1
, column2
, and so on are the columns that you want to select, and column
is the related column between the two tables.
For example, the following SQL query uses a RIGHT JOIN to combine data from two tables:
SELECT orders.order_date, customers.customer_name FROM orders RIGHT JOIN customers ON orders.customer_id = customers.customer_id;
In this example, the query joins the orders
table and the customers
table based on the customer_id
column, and selects the order_date
and customer_name
columns. If a customer has no orders, the result will contain NULL values for the order_date