"SQL 오른쪽 조인"의 두 판 사이의 차이

18번째 줄: 18번째 줄:


==예시==
==예시==
{| class='w-100'
|class="align-top"|
<syntaxhighlight lang='mysql' run>
<syntaxhighlight lang='mysql' run>
SELECT * FROM employee
SELECT * FROM employee
</syntaxhighlight>
</syntaxhighlight>
|class="align-top"|
<syntaxhighlight lang='mysql' run>
<syntaxhighlight lang='mysql' run>
SELECT * FROM department
SELECT * FROM department
</syntaxhighlight>
</syntaxhighlight>
 
|}
----
<syntaxhighlight lang='mysql' run>
<syntaxhighlight lang='mysql' run>
SELECT *
SELECT * FROM employee RIGHT JOIN department
FROM employee  
ON employee.DepartmentID = department.DepartmentID
RIGHT JOIN department ON employee.DepartmentID = department.DepartmentID
</syntaxhighlight>
</syntaxhighlight>
<syntaxhighlight lang='mysql' run>
<syntaxhighlight lang='mysql' run>

2021년 7월 26일 (월) 01:11 판

1 개요

SQL right join, right outer join
SQL 오른쪽 조인, 오른쪽 외부 조인, 오른쪽 조인, 라이트 조인, 라이트 아우터 조인

SQL Join - 03 A Right Join B.svg

SELECT *
FROM 테이블1 RIGHT JOIN 테이블2
ON 테이블1.컬럼=테이블2.컬럼;
SELECT *
FROM 테이블1 RIGHT OUTER JOIN 테이블2
ON 테이블1.컬럼=테이블2.컬럼;

2 예시

SELECT * FROM employee
SELECT * FROM department
SELECT * FROM employee RIGHT JOIN department
ON employee.DepartmentID = department.DepartmentID
SELECT A.LastName, B.DepartmentID, B.DepartmentName 
FROM employee A RIGHT JOIN department B
ON A.DepartmentID = B.DepartmentID

3 같이 보기

4 참고

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