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์•Œ๊ณ ๋ฆฌ์ฆ˜ ๐Ÿ’ก/ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค29

์„ฑ๋ถ„์œผ๋กœ ๊ตฌ๋ถ„ํ•œ ์•„์ด์Šคํฌ๋ฆผ ์ด ์ฃผ๋ฌธ๋Ÿ‰ (GROUP BY) https://school.programmers.co.kr/learn/courses/30/lessons/133026 ํ”„๋กœ๊ทธ๋ž˜๋จธ์ŠคSW๊ฐœ๋ฐœ์ž๋ฅผ ์œ„ํ•œ ํ‰๊ฐ€, ๊ต์œก, ์ฑ„์šฉ๊นŒ์ง€ Total Solution์„ ์ œ๊ณตํ•˜๋Š” ๊ฐœ๋ฐœ์ž ์„ฑ์žฅ์„ ์œ„ํ•œ ๋ฒ ์ด์Šค์บ ํ”„programmers.co.krSELECT INGREDIENT_TYPE, sum(TOTAL_ORDER)as TOTAL_ORDERfrom FIRST_HALF a inner join icecream_info b on a.flavor = b.flavorgroup by INGREDIENT_TYPE 2025. 3. 31.
๊ณ ์–‘์ด์™€ ๊ฐœ๋Š” ๋ช‡ ๋งˆ๋ฆฌ ์žˆ์„๊นŒ (Group by) https://school.programmers.co.kr/learn/courses/30/lessons/59040 ํ”„๋กœ๊ทธ๋ž˜๋จธ์ŠคSW๊ฐœ๋ฐœ์ž๋ฅผ ์œ„ํ•œ ํ‰๊ฐ€, ๊ต์œก, ์ฑ„์šฉ๊นŒ์ง€ Total Solution์„ ์ œ๊ณตํ•˜๋Š” ๊ฐœ๋ฐœ์ž ์„ฑ์žฅ์„ ์œ„ํ•œ ๋ฒ ์ด์Šค์บ ํ”„programmers.co.kr  SELECT animal_type, count(animal_type) as countfrom animal_insgroup by animal_typeorder by animal_type 2025. 3. 31.
์กฐ๊ฑด์— ๋ถ€ํ•ฉํ•˜๋Š” ์ค‘๊ณ ๊ฑฐ๋ž˜ ๋Œ“๊ธ€ ์กฐํšŒํ•˜๊ธฐ https://school.programmers.co.kr/learn/courses/30/lessons/164673 ํ”„๋กœ๊ทธ๋ž˜๋จธ์ŠคSW๊ฐœ๋ฐœ์ž๋ฅผ ์œ„ํ•œ ํ‰๊ฐ€, ๊ต์œก, ์ฑ„์šฉ๊นŒ์ง€ Total Solution์„ ์ œ๊ณตํ•˜๋Š” ๊ฐœ๋ฐœ์ž ์„ฑ์žฅ์„ ์œ„ํ•œ ๋ฒ ์ด์Šค์บ ํ”„programmers.co.kr SELECT B.TITLE, B.BOARD_ID, R.REPLY_ID, R.WRITER_ID, R.CONTENTS, DATE_FORMAT(R.CREATED_DATE,"%Y-%m-%d") AS CREATED_DATEFROM USED_GOODS_BOARD AS B INNER JOIN USED_GOODS_REPLY AS R ON B.BOARD_ID = R.BOARD_ID WHERE B.CREATED_DATE like '2022-10%'ORDER .. 2025. 3. 24.
ํ‰๋ถ€์™ธ๊ณผ ๋˜๋Š” ์ผ๋ฐ˜์™ธ๊ณผ ์˜์‚ฌ ๋ชฉ๋ก ์ถœ๋ ฅํ•˜๊ธฐ https://school.programmers.co.kr/learn/courses/30/lessons/132203 ํ”„๋กœ๊ทธ๋ž˜๋จธ์ŠคSW๊ฐœ๋ฐœ์ž๋ฅผ ์œ„ํ•œ ํ‰๊ฐ€, ๊ต์œก, ์ฑ„์šฉ๊นŒ์ง€ Total Solution์„ ์ œ๊ณตํ•˜๋Š” ๊ฐœ๋ฐœ์ž ์„ฑ์žฅ์„ ์œ„ํ•œ ๋ฒ ์ด์Šค์บ ํ”„programmers.co.kr๋ฌธ์ œ ํ’€์ดSELECT DR_NAME,DR_ID,MCDP_CD,DATE_FORMAT(HIRE_YMD,'%Y-%m-%d')as HIRE_YMDfrom DOCTORwhere 1=1and MCDP_CD = 'GS' OR MCDP_CD = 'CS'order by HIRE_YMD desc,DR_NAME asc; 2025. 3. 24.
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