๐Ÿฌ MySQL/๋ฌธ์ œํ’€์ด

[MySQL] ๋ฐ์ดํ„ฐ๋ถ„์„์„ ์œ„ํ•œ SQL (ํ”Œ๋žซํผ ์†Œ๊ฐœ)

xod22 2023. 1. 24. 23:07
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https://www.youtube.com/watch?v=27IOUaUTN04&feature=youtu.be

SQL ๋ฐ์ดํ„ฐ ๋ถ„์„ ์บ ํ”„(์‹ค์ „๋ฐ˜)๋ฅผ ์ˆ˜๊ฐ•ํ•˜๊ฒŒ ๋˜์–ด ๊ธฐ์ดˆ SQL ๋ฌธ๋ฒ•์„ ๋‹ค์‹œ ์ˆ™์ง€ํ•˜๊ธฐ ์œ„ํ•ด SQL ๋ณต๊ธฐ ๊ณต๋ถ€๋ฅผ ํ•˜๋ ค๊ณ  ํ•ฉ๋‹ˆ๋‹ค.

SQL ๊ธฐ๋ณธ ๋ฌธ๋ฒ• : SELECT, FROM, WHERE, ORDER BY, LIMIT
์กฐ๊ฑด๋ฌธ : CASE, IF
๊ทธ๋ฃน์ง‘๊ณ„ : GROUP BY, HAVING
ํ…Œ์ด๋ธ” ์—ฐ๊ฒฐ : JOIN

 

์˜์ƒ ์š”์•ฝ ๊ฒธ ๊ณต๋ถ€ํ•œ ๋‚ด์šฉ๋“ค์„ ์ •๋ฆฌํ•ด๋ณด๋„๋ก ํ•˜๊ฒ ์Šต๋‹ˆ๋‹ค!


- ๋ฐ์ดํ„ฐ ๋ถ„์„๊ฐ€์˜ ๊ด€์ ์—์„œ ์Œ“์—ฌ์žˆ๋Š” ๋ฐ์ดํ„ฐ๋“ค์„ ์–ด๋–ป๊ฒŒํ•˜๋ฉด ์ž˜ ๊ฐ€์ง€๊ณ  ์˜ฌ ์ˆ˜ ์žˆ์„์ง€์— ๋Œ€ํ•œ ๊ณ ๋ฏผ

 

- SQL ๋ฌธ์ œ ํ’€์ด(ํ•ด์ปค๋žญํฌ) : ์นด์นด์˜ค ์ฝ”๋”ฉํ…Œ์ŠคํŠธ ํ”Œ๋žซํผ์œผ๋กœ ๋งŽ์ด ์•Œ๋ ค์ ธ์žˆ์Œ

 

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/

 

- ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค

 

ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค

์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.

programmers.co.kr

 

- ์ฟผ๋ฆฌ ๋‚ ๋ ค์„œ ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค์—์„œ ์กฐํšŒํ•ด๋ณด๊ธฐ(์—ฐ์Šต)

 

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 ์—ฐ์Šต ์‚ฌ์ดํŠธ

 

SQL Joins Visualizer

Please select how do you want to do SQL JOIN between two table Copy SQL

sql-joins.leopard.in.ua

 

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