๋ฐ์ํ
1. ์ฌ๊ธฐ์์ ํ๋์ฉ ์ฝ๋ ์คํํด๋ณด๊ณ => ๊ฒฐ๊ณผ๋ณด๊ธฐ => ๋ถ์กฑํ ๊ฐ๋ ๋ง ์ ๋ฆฌํ๊ธฐ
์ฒดํํ๋ฉด ๋๋ค. ์ค๋ ๋ค ๋๋ผ ์์ ์ด๋ค. ์์์
http://tcpschool.com/mysql/mysql_datatype_numeric
์ฌ๊ธฐ์์๋ https://keep-cool.tistory.com/37
https://junetudie.tistory.com/11
http://www.gurubee.net/lecture/1300
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