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2021.01.07 TIL

07 Jan 2021

๐“๐จ๐๐š๐ฒ ๐ˆ ๐‹๐ž๐š๐ซ๐ง๐ž๐

๐Ÿ’ป

โ–ถ ๐‘จ๐’„๐’‚๐’…๐’†๐’Ž๐’š

1) ๋งํฌ ์–ด์ œ์ž ์›น๊ฐœ๋ฐœ ๊ฐ•์˜๋ฅผ ์ •๋ฆฌํ–ˆ์Šต๋‹ˆ๋‹ค. Join๋ฌธ๊ณผ Union์„ ๋ฐฐ์› ์Šต๋‹ˆ๋‹ค.
2) ๋งํฌ ์˜ค๋Š˜์ž ์›น๊ฐœ๋ฐœ ๊ฐ•์˜ ์ •๋ฆฌ์ž…๋‹ˆ๋‹ค. SQL View, Index / PHP ๋ฌธ๋ฒ• / PHP ๋ฌธ์„œ์—์„œ์˜ SQL ์—ฐ๊ฒฐ ๋ฐ ์ฟผ๋ฆฌ ์‚ฌ์šฉ์„ ๋ฐฐ์› ์Šต๋‹ˆ๋‹ค.

โœจ

โ–ถ ๐‘ซ๐’‚๐’š

โ–ถ ๐‘น๐’†๐’”๐’•


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