๐Ÿ’ SQL/Join

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค][SQL] ์—†์–ด์ง„ ๊ธฐ๋ก ์ฐพ๊ธฐ

์„ ๋‹ฌ 2023. 5. 19. 23:30
๋ฐ˜์‘ํ˜•

https://school.programmers.co.kr/learn/courses/30/lessons/59042

 

ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค

์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.

programmers.co.kr

 

-- ์ฝ”๋“œ๋ฅผ ์ž…๋ ฅํ•˜์„ธ์š”
SELECT ANIMAL_ID, NAME
from ANIMAL_OUTS
where ANIMAL_ID not in (select ANIMAL_ID from ANIMAL_INS)
order by ANIMAL_ID
๋ฐ˜์‘ํ˜•