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Mysql study์ผ์ง€ 2 Read๋ถ€ํ„ฐ INSERT www.tcpschool.com/mysql/mysql_basic_insert SELECT SELECT * FROM table_name; - ๋ชจ๋“  ๋ฐ์ดํ„ฐ(ํ–‰) ์ถœ๋ ฅ SELECT a,b,c,d FROM table_name - a,b,c,d์— ํ•ด๋‹นํ•˜๋Š” ํ–‰๋งŒ ์ถœ๋ ฅ SELECT a,b,c,d FROM table_name WHERE ํ–‰์ด๋ฆ„='์—ด๋‚ด์šฉ' - ํ–‰์ด๋ฆ„์—์„œ '์—ด๋‚ด์šฉ'์ธ ๋ฐ์ดํ„ฐ๋งŒ ๋ฝ‘์•„์„œ ์ถœ๋ ฅ youtu.be/FCnJH6fLc64
Mysql study์ผ์ง€ 1 dev.mysql.com/downloads/mysql/ ํŒŒ์ผ ๋‹ค์šด ํ›„ ์„ค์น˜ 'cd /usr/local/mysql/bin/โ‚ฉ ํƒ€๊ณ  ๋“ค์–ด๊ฐ€์„œ ./mysql -uroot -p ํ•˜๊ณ  ๋น„๋ฒˆ ์ž…๋ ฅ NOT NULL - NULL์„ ํ—ˆ์šฉํ•˜์ง€ ์•Š๋Š”๋‹ค NULL - NULL์ด์—ฌ๋„ ๊ฐ€๋Šฅ AUTO_INCREMENT - ์ž๋™์œผ๋กœ ์ˆซ์ž ํ•˜๋‚˜์”ฉ ํ‚ค์›Œ์„œ ์ž…๋ ฅํ•ด์คŒ (id์— ์‚ฌ์šฉ) PRIMARY KEY - ์„ฑ๋Šฅ์ ์ธ ์ธก๋ฉด / ์ค‘๋ณต์„ ๋ฐฉ์ง€ํ•˜๋Š” ์ธก๋ฉด ์จ์น˜ํ•˜๋‹ค ์ฐพ์€๊ฒƒ - ํ•œ๊ธ€์„ค๋ช…์œผ๋กœ ์‰ฝ๊ฒŒ ์„ค๋ช…ํ•ด๋†จ๋‹ค www.tcpschool.com/mysql/mysql_basic_create ์ฝ”๋”ฉ๊ต์œก ํ‹ฐ์”จํ”ผ์Šค์ฟจ 4์ฐจ์‚ฐ์—…ํ˜๋ช…, ์ฝ”๋”ฉ๊ต์œก, ์†Œํ”„ํŠธ์›จ์–ด๊ต์œก, ์ฝ”๋”ฉ๊ธฐ์ดˆ, SW์ฝ”๋”ฉ, ๊ธฐ์ดˆ์ฝ”๋”ฉ๋ถ€ํ„ฐ ์ž๋ฐ” ํŒŒ์ด์ฌ ๋“ฑ tcpschool.com SQL์ด ๋ญ”๊ฐ€ ์ต์ˆ™ํ•ด์„œ ์ƒ๊ฐํ•ด๋ณด๋‹ˆ ์ž‘๋…„..
์ด๋ชจํ‹ฐ์ฝ˜
react / ์ปดํฌ๋„ŒํŠธ ์ œ์ž‘ / ํšŒ์›๊ฐ€์ž… ํ™”๋ฉด ๊ตฌํ˜„
React study / sass ์—ฐ๊ฒฐ์‹œ Node Sass version 5.0.0 is incompatible with ^4.0.0. ์ถฉ๋Œ๋‚˜์„œ ๊ทธ๋Ÿผ ์ง€์› ๋‹ค๊ฐ€ 4.0.0๋ฒ„์ „์œผ๋กœ ๋‹ค์‹œ ๊น”๋ฉด ๋œ๋‹ค npm์ด๋ฉด uninstall yarn์ด๋ฉด remove ๋กœ ์ง€์›Œ์ฃผ๋ฉด ๋จ ๐Ÿ‘‡ ํ•ด๊ฒฐ๋ฐฉ๋ฒ• https://guswnl0610.github.io/react/react-sass-error/
react study / ๋ฐฐ์—ด ์ž…๋ ฅ / ์ˆ˜์ • / ์‚ญ์ œ app.js import './App.css'; import React from 'react'; import { useRef } from 'react'; import { useState } from 'react'; import UserList from './UserList'; import CreateUser from './CreateUser' function App() { const [inputs, setInputs] = useState({ username: '', email: '' }); const { username, email } = inputs; const onChange = e => { const { name, value } = e.target; setInputs({ ...inputs, [nam..
react study / input์ฒ˜๋ฆฌํ•˜๊ธฐ / ์—ฌ๋Ÿฌ๊ฐœ input ์ฒ˜๋ฆฌ https://binggamel.tistory.com/m/100 react study / ์ปดํฌ๋„ŒํŠธ์—์„œ ๊ฐ’ ๋ฐ›์•„ ๋ฐ”๊พธ๊ธฐ Counter.js import React from 'react'; import { useState } from 'react'; function Counter() { const [number, setNumber] = useState(0); const onIncrease = () => { setNumber(prevNumber => prevNumber +.. binggamel.tistory.com ๐Ÿ‘†์ปดํฌ๋„ŒํŠธ ๊ฐ’ ๋ฐ”๊พธ๊ธฐ / useState ์‚ฌ์šฉ input์„ ๋ฐ›์•„ ์ฒ˜๋ฆฌํ•˜๊ธฐ import React from 'react'; import { useState } from 'react'; function..
react study / ์ปดํฌ๋„ŒํŠธ์—์„œ ๊ฐ’ ๋ฐ›์•„ ๋ฐ”๊พธ๊ธฐ Counter.js import React from 'react'; import { useState } from 'react'; function Counter() { const [number, setNumber] = useState(0); const onIncrease = () => { setNumber(prevNumber => prevNumber + 1); } const onDecrease = () => { setNumber(prevNumber => prevNumber- 1); } return ( {number} +1 -1 ) } export default Counter; ๋งค์šฐ ์‰ฌ์šด ์˜ˆ์ œ! ํ•œ๋ฒˆ ํ•ด๋ณด์ž ๋ฒ„ํŠผ์„ ๋‹ฌ์•„์ฃผ๊ณ  ๋ˆ„๋ฅด๋Š”๋Œ€๋กœ ์ˆซ์ž ๋ฐ”๊พธ๊ธฐ onClick ์ด๋ฒˆํŠธ๋ฅผ ๋„ฃ์–ด์ค€๋‹ค on์ด๋ฒคํŠธ์ด๋ฆ„ = {์‹คํ–‰ํ•˜๊ณ ์ž..

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