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1:N 일때 JOIN 알아보기 (inner, left, right, outer ) 본문

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1:N 일때 JOIN 알아보기 (inner, left, right, outer )

요르딩딩 2021. 10. 28. 17:45
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Table

 

INNER JOIN

 

LEFT JOIN

 

RIGHT JOIN

 

LEFT OUTER JOIN

 

RIGHT OUTER JOIN

 

FULL OUTER JOIN = LEFT JOIN UNION RIGHT JOIN 

(MySQL에는 FULL OUTER JOIN 사용불가)

 

 

 

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