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๋ชฉ๋ก๐Ÿ“ Coding Test (140)

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[MySQL]ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋”ฉํ…Œ์ŠคํŠธ ์—ฐ์Šต2(์ตœ๊ทผ๊ฐ’ ๊ฐ€์ ธ์˜ค๊ธฐ)

ํŒŒ์ด์ฌ์ด๋‚˜ R์— ๋น„ํ•ด MySQL์€ ๊ณต๋ถ€๋ฅผ ์ž˜ ์•ˆํ•ด์„œ ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์— ์˜ฌ๋ผ์™€์žˆ๋Š” ์ฝ”๋”ฉํ…Œ์ŠคํŠธ ๋ฌธ์ œ๋ผ๋„ ํ’€์–ด๋ณด๋ ค๊ณ  ํ•ฉ๋‹ˆ๋‹น!! ๋ฌธ์ œ ANIMAL_INS ํ…Œ์ด๋ธ”์€ ๋™๋ฌผ ๋ณดํ˜ธ์†Œ์— ๋“ค์–ด์˜จ ๋™๋ฌผ์˜ ์ •๋ณด๋ฅผ ๋‹ด์€ ํ…Œ์ด๋ธ”์ž…๋‹ˆ๋‹ค. ANIMAL_INS ํ…Œ์ด๋ธ” ๊ตฌ์กฐ๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์œผ๋ฉฐ, ANIMAL_ID, ANIMAL_TYPE, DATETIME, INTAKE_CONDITION, NAME, SEX_UPON_INTAKE ๋Š” ๊ฐ๊ฐ ๋™๋ฌผ์˜ ์•„์ด๋””, ์ƒ๋ฌผ ์ข…, ๋ณดํ˜ธ ์‹œ์ž‘์ผ, ๋ณดํ˜ธ ์‹œ์ž‘ ์‹œ ์ƒํƒœ, ์ด๋ฆ„, ์„ฑ๋ณ„ ๋ฐ ์ค‘์„ฑํ™” ์—ฌ๋ถ€๋ฅผ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. ๊ฐ€์žฅ ์ตœ๊ทผ์— ๋“ค์–ด์˜จ ๋™๋ฌผ์€ ์–ธ์ œ ๋“ค์–ด์™”๋Š”์ง€ ์กฐํšŒํ•˜๋Š” SQL ๋ฌธ์„ ์ž‘์„ฑํ•ด์ฃผ์„ธ์š”. ์˜ˆ์‹œ) ํ’€์ด SELECT DATETIME AS '์‹œ๊ฐ„' FROM ANIMAL_INS ORDER BY DATETIME DESC LI..

๐Ÿ“ Coding Test/MySQL 2022. 2. 7. 10:15
[MySQL] ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋”ฉํ…Œ์ŠคํŠธ ์—ฐ์Šต1

์•ˆ๋…•ํ•˜์„ธ์š”! ์ฝ”๋”ฉํ…Œ์ŠคํŠธ์— ๋Œ€๋น„ํ•˜๊ธฐ ์œ„ํ•ด ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค LEVEL 1 ๋ฌธ์ œ๋ฅผ ํ’€์–ด๋ณด๋„๋ก ํ•˜๊ฒ ์Šต๋‹ˆ๋‹ค. https://programmers.co.kr/learn/courses/30/lessons/59037 ANIMAL_INS ํ…Œ์ด๋ธ”์€ ๋™๋ฌผ ๋ณดํ˜ธ์†Œ์— ๋“ค์–ด์˜จ ๋™๋ฌผ์˜ ์ •๋ณด๋ฅผ ๋‹ด์€ ํ…Œ์ด๋ธ”์ž…๋‹ˆ๋‹ค. ANIMAL_INS ํ…Œ์ด๋ธ” ๊ตฌ์กฐ๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์œผ๋ฉฐ, ANIMAL_ID, ANIMAL_TYPE, DATETIME, INTAKE_CONDITION, NAME, SEX_UPON_INTAKE๋Š” ๊ฐ๊ฐ ๋™๋ฌผ์˜ ์•„์ด๋””, ์ƒ๋ฌผ ์ข…, ๋ณดํ˜ธ ์‹œ์ž‘์ผ, ๋ณดํ˜ธ ์‹œ์ž‘ ์‹œ ์ƒํƒœ, ์ด๋ฆ„, ์„ฑ๋ณ„ ๋ฐ ์ค‘์„ฑํ™” ์—ฌ๋ถ€๋ฅผ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. ๋™๋ฌผ ๋ณดํ˜ธ์†Œ์— ๋“ค์–ด์˜จ ๋™๋ฌผ ์ค‘ ์ Š์€ ๋™๋ฌผ1์˜ ์•„์ด๋””์™€ ์ด๋ฆ„์„ ์กฐํšŒํ•˜๋Š” SQL ๋ฌธ์„ ์ž‘์„ฑํ•ด์ฃผ์„ธ์š”. ์ด๋•Œ ๊ฒฐ๊ณผ๋Š” ์•„์ด๋”” ์ˆœ์œผ๋กœ ์กฐํšŒํ•ด์ฃผ์„ธ์š”..

๐Ÿ“ Coding Test/MySQL 2022. 2. 6. 15:20