๐Ÿ—๏ธPROGRAMMERS/SQL

[SQL] 3์›”์— ํƒœ์–ด๋‚œ ์—ฌ์„ฑ ํšŒ์› ๋ชฉ๋ก ์ถœ๋ ฅํ•˜๊ธฐ

๋น™๋””์šฉ 2024. 4. 19.

์‹œ์šฉ์–ธ์–ด : MYSQL

LEVEL : 2

๋ฌธ์ œ : 3์›”์— ํƒœ์–ด๋‚œ ์—ฌ์„ฑ ํšŒ์› ๋ชฉ๋ก ์ถœ๋ ฅํ•˜๊ธฐ

 

ํ”„๋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

๋ฌธ์ œํ’€์ด

SELECT MEMBER_ID, MEMBER_NAME, GENDER, DATE_FORMAT(DATE_OF_BIRTH, '%Y-%m-%d') AS DATE_OF_BIRTH
FROM MEMBER_PROFILE
WHERE DATE_OF_BIRTH LIKE ('%-03-%') AND GENDER = 'W' AND TLNO IS NOT NULL 
ORDER BY MEMBER_ID ASC;

- ๋ฌธ์ œ์—์„œ ๋ฐ์ดํŠธ ํฌ๋ฉง์ด  'YYYY-MM-DD'๋กœ ๋ณ€๊ฒฝ์ด ๋˜์—ˆ๊ธฐ ๋•Œ๋ฌธ์— DATE_FORMAT(DATE_OF_BIRTH, '%Y-%m-%d') ์™€ ๊ฐ™์ด ๋ณ€๊ฒฝ์„ ํ•ด ์ฃผ์—ˆ๋‹ค.

- ๋ฌธ์ œ์—์„œ 3์›”์ƒ์ธ ์—ฌ์„ฑํšŒ์›์ด๋ฉด์„œ ํœด๋Œ€ํฐ๋ฒˆํ˜ธ๊ฐ€ NULL์ด ์•„๋‹Œ ๊ฐ’์ด ์กฐํšŒ์กฐ๊ฑด์ด๋ผ ์ด๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ WHERE์ ˆ์„ ์ƒ์„ฑํ–ˆ๋‹ค.

์ •๋ ฌ๊ธฐ์ค€์ธ MEMBER_ID๋ฅผ ๊ธฐ์ค€์œผ๋กœ ์˜ค๋ฆ„์ฐจ์ˆœ์„ ๋งŒ๋“ค๊ธฐ ์œ„ํ•ด ORDER BY ์ ˆ์„ ์ž‘์„ฑํ–ˆ๋‹ค(ASC๋Š” ์ƒ๋žต๊ฐ€๋Šฅ) 

๋Œ“๊ธ€