https://www.youtube.com/watch?v=27IOUaUTN04&feature=youtu.be
SQL ๋ฐ์ดํฐ ๋ถ์ ์บ ํ(์ค์ ๋ฐ)๋ฅผ ์๊ฐํ๊ฒ ๋์ด ๊ธฐ์ด SQL ๋ฌธ๋ฒ์ ๋ค์ ์์งํ๊ธฐ ์ํด SQL ๋ณต๊ธฐ ๊ณต๋ถ๋ฅผ ํ๋ ค๊ณ ํฉ๋๋ค.
SQL ๊ธฐ๋ณธ ๋ฌธ๋ฒ : SELECT, FROM, WHERE, ORDER BY, LIMIT
์กฐ๊ฑด๋ฌธ : CASE, IF
๊ทธ๋ฃน์ง๊ณ : GROUP BY, HAVING
ํ ์ด๋ธ ์ฐ๊ฒฐ : JOIN
์์ ์์ฝ ๊ฒธ ๊ณต๋ถํ ๋ด์ฉ๋ค์ ์ ๋ฆฌํด๋ณด๋๋ก ํ๊ฒ ์ต๋๋ค!
- ๋ฐ์ดํฐ ๋ถ์๊ฐ์ ๊ด์ ์์ ์์ฌ์๋ ๋ฐ์ดํฐ๋ค์ ์ด๋ป๊ฒํ๋ฉด ์ ๊ฐ์ง๊ณ ์ฌ ์ ์์์ง์ ๋ํ ๊ณ ๋ฏผ
- SQL ๋ฌธ์ ํ์ด(ํด์ปค๋ญํฌ) : ์นด์นด์ค ์ฝ๋ฉํ ์คํธ ํ๋ซํผ์ผ๋ก ๋ง์ด ์๋ ค์ ธ์์
Dashboard | HackerRank
Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews.
www.hackerrank.com
-solveSQL
https://solvesql.com/problems/
- ํ๋ก๊ทธ๋๋จธ์ค
ํ๋ก๊ทธ๋๋จธ์ค
์ฝ๋ ์ค์ฌ์ ๊ฐ๋ฐ์ ์ฑ์ฉ. ์คํ ๊ธฐ๋ฐ์ ํฌ์ง์ ๋งค์นญ. ํ๋ก๊ทธ๋๋จธ์ค์ ๊ฐ๋ฐ์ ๋ง์ถคํ ํ๋กํ์ ๋ฑ๋กํ๊ณ , ๋์ ๊ธฐ์ ๊ถํฉ์ด ์ ๋ง๋ ๊ธฐ์ ๋ค์ ๋งค์นญ ๋ฐ์ผ์ธ์.
programmers.co.kr
- ์ฟผ๋ฆฌ ๋ ๋ ค์ ๋ฐ์ดํฐ๋ฒ ์ด์ค์์ ์กฐํํด๋ณด๊ธฐ(์ฐ์ต)
SQL Tryit Editor v1.6
WebSQL stores a Database locally, on the user's computer. Each user gets their own Database object. WebSQL is supported in Chrome, Safari, Opera, and Edge(79). If you use another browser you will still be able to use our Try SQL Editor, but a different ver
www.w3schools.com
- LeetCode
SQL - Study Plan - LeetCode
SQL (Structured Query Language) is used to manage relational database management systems (RDBMS). The scope of SQL includes data insertion, query, update and deletion, database schema creation and modification, and data access control.
leetcode.com
- join ์ฐ์ต ์ฌ์ดํธ
SQL Joins Visualizer
Please select how do you want to do SQL JOIN between two table Copy SQL
sql-joins.leopard.in.ua
'๐ฌ MySQL > ๋ฌธ์ ํ์ด' ์นดํ ๊ณ ๋ฆฌ์ ๋ค๋ฅธ ๊ธ
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