๐์ค๋ฌด Sql ์ฟผ๋ฆฌ ์์ ์ ๋ณต๐ฅ | ์ง๊ณํจ์ + ์กฐ๊ฑด๋ฌธ ํ์ฉ๋ฒ! #sql #์ง๊ณํจ์ #casewhen #sql์ค๋ฌด #sumํจ์ #sql๊ฐ์ #๋ฐ์ดํฐ๋ถ์ #์ฟผ๋ฆฌ์์ฑ #sql์ฟผ๋ฆฌ
Synopsis
์๋
ํ์ธ์. ์ฐฉํ์ฝ๋ฉ์
๋๋ค. SQL ์ฟผ๋ฆฌ์์ SUM๊ณผ CASE WHEN, ์ด๋ป๊ฒ ์กฐํฉํด์ ์จ์ผ ํ ๊น์? ์ด ์์์์๋ ์ค๋ฌด์์ ๊ฐ์ฅ ๋ง์ดย ...
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