RIGHT OUTER JOIN¶
Function¶
Match the right table with the left table and return all matched records of the right table. If no matched record is found, NULL will be returned.
Syntax¶
SELECT attr_expr_list FROM table_reference
RIGHT OUTER JOIN table_reference ON join_condition;
Keyword¶
RIGHT OUTER JOIN: Return all matched records of the right table. If no record is matched, NULL is returned.
Precautions¶
The to-be-joined table must exist. Otherwise, an error is reported.
Example¶
To join the courseId from the course_info table to the courseId from the student_info table for inner join and return the records in the course_info table, run the following statement. If no joined record is found, NULL will be returned.
SELECT student_info.name, course_info.courseName FROM student_info
RIGHT OUTER JOIN course_info ON (student_info.courseId = course_info.courseId);