๋ณธ๋ฌธ ๋ฐ”๋กœ๊ฐ€๊ธฐ

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[tistory] ํ‹ฐ์Šคํ† ๋ฆฌ ๊พธ๋ฏธ๊ธฐ ๋งˆ์šฐ์Šค ํฌ์ธํ„ฐ ์„ค์ •ํ•˜๊ธฐ ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์„ธ๊ณ„๋ฅผ ํƒ๊ตฌํ•ฉ์‹œ๋‹ค. [ ํ‹ฐ์Šคํ† ๋ฆฌ ๊พธ๋ฏธ๊ธฐ ๋งˆ์šฐ์Šค ํฌ์ธํ„ฐ ์„ค์ •ํ•˜๊ธฐ ] ๊ฐ„๋‹จํ•œ ์„ค์ •์œผ๋กœ ํ‹ฐ์Šคํ† ๋ฆฌ ๋ธ”๋กœ๊ทธ์˜ ๋งˆ์šฐ์Šค ํฌ์ธํ„ฐ(์ปค์„œ)๋ฅผ ๋ณ€๊ฒฝํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. 1. ์ปค์„œ ์„ ํƒํ•˜๊ธฐ https://www.cursors-4u.com/ Free Cursor Downloads - Cursors-4U.com Date: 4 Feb 2021, 21:35 By Tor With 7 Comments This month's favorite cursors is the "Sexy Red Lips". It's unknown who made the image. If you know who did it, send me an email so I can give proper credit. Also being February, check ou.. 2023. 11. 30.
[Python] Jupyter Notebook ๋ฐ์ดํ„ฐ ์ „์ฒ˜๋ฆฌ ๊ธฐ์ดˆ(์—‘์…€ ํŒŒ์ผ ๋ถˆ๋Ÿฌ์˜ค๊ธฐ) ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์„ธ๊ณ„๋ฅผ ํƒ๊ตฌํ•ฉ์‹œ๋‹ค. - ํ–‰๋ ฌ ๋ฐ์ดํ„ฐ๋ฅผ ์ฒ˜๋ฆฌํ•˜๊ธฐ ์œ„ํ•œ ๋‹ค์–‘ํ•œ ํ•จ์ˆ˜๋ฅผ ์ง€์›ํ•˜๋Š” ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ - ํŒŒ์ผ ์ฝ๊ธฐ, ์ €์žฅ, ํ–‰๋ ฌ๋ฐ์ดํ„ฐ ์ฒ˜๋ฆฌ, ๊ธฐ๋ณธ์‹œ๊ฐํ™” ๋“ฑ ์ง€์› - ๋ฐ์ดํ„ฐ ์ „์ฒ˜๋ฆฌ ๊ณผ์ •์—์„œ ์ฃผ๋กœ ์‚ฌ์šฉ๋จ ๋ฐ์ดํ„ฐ ์ˆ˜์ง‘ > ๋ฐ์ดํ„ฐ ์ „์ฒ˜๋ฆฌ > ๋ฐ์ดํ„ฐ ๊ฐ€๊ณต(ํ•„์š”์‹œ ์ „์ฒ˜๋ฆฌ) > ๋ฐ์ดํ„ฐ ๋ถ„์„ ํƒ์ƒ‰/์‹œ๊ฐํ™”(ํ•„์š”์‹œ ์ „์ฒ˜๋ฆฌ) > ํ•„์š”์‹œ ๋ชจ๋ธ ํ›ˆ๋ จ(๋จธ์‹ ๋Ÿฌ๋‹ or ๋”ฅ๋Ÿฌ๋‹) > ์›น์„œ๋น„์Šค ๋˜๋Š” ๋ถ„์„๋ณด๊ณ ์„œ * ์ผ๋ฐ˜์ ์œผ๋กœ ์ฑ…์—์„œ๋Š” : ๋ฐ์ดํ„ฐ์ˆ˜์ง‘ > ์ „์ฒ˜๋ฆฌ > ๋ถ„์„ > ์‹œ๊ฐํ™”๋กœ ์„ค๋ช…ํ•˜๊ณ  ์žˆ์Œ * ๋ถ„์„๊ณผ์ •์€ ํšŒ์‚ฌ์— ๋”ฐ๋ผ ๋‹ค๋ฆ„ - ๋‚ ์งœ ํ™•์ธ : ๊ธฐ์ค€์ผ๋กœ ์‚ฌ์šฉ - ๋ฒ”์ฃผํ˜• ๋ฐ์ดํ„ฐ ํ™•์ธ : ์˜ˆ๋กœ ๋‚จ์ž ๋˜๋Š” ์—ฌ์ž์™€ ๊ฐ™์€ ๋ฐ์ดํ„ฐ 1. ๋ฐ์ดํ„ฐ ์ฝ์–ด๋“ค์ด๊ธฐ [ ํŒŒ์ผ ์œ„์น˜ ์ง€์ • ] ### ํŒŒ์ผ ์œ„์น˜ ์ง€์ • file_path = "./files/sample_1... 2023. 11. 30.
[Database] HeidiSQL ํ•จ์ˆ˜_๋ทฐ_ํ”„๋กœ์‹œ์ € ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์„ธ๊ณ„๋ฅผ ํƒ๊ตฌํ•ฉ์‹œ๋‹ค. [ ํ•จ์ˆ˜ ์ƒ์„ฑ ] -- ์ƒํ’ˆ๋ถ„๋ฅ˜๋ช…์„ ์ถ”์ถœํ•˜๋Š” ํ•จ์ˆ˜ ์ƒ์„ฑํ•˜๊ธฐ -- ํ•จ์ˆ˜ ๊ตฌ๋ฌธ ์‹œ์ž‘ Delimiter // -- ์‚ฌ์šฉ์ž ์ •์˜ํ•จ์ˆ˜ CREATE FUNCTION defGetLprodNm(paramGu VARCHAR(10)) -- ๋ฆฌํ„ดํƒ€์ž… ์ •์˜ RETURNS VARCHAR(50) -- character set UTF8MB4 -- ํ•จ์ˆ˜ ๊ธฐ๋Šฅ ์‹œ์ž‘ BEGIN -- ๋ฐ˜ํ™˜ํ•  ๊ฐ’์„ ์ €์žฅํ•  ๋ณ€์ˆ˜ ์„ ์–ธ DECLARE result VARCHAR(50); -- ์ƒํ’ˆ๋ถ„๋ฅ˜๋ช…์„ ์ถ”์ถœํ•˜๋Š” sql ๊ตฌ๋ฌธ ์ž‘์„ฑ select lprod_nm INTO result FROM lprod WHERE lprod_gu = paramGu; -- ๋ฐ˜ํ™˜ํ•˜๊ธฐ RETURN result; -- ํ•จ์ˆ˜ ๊ธฐ๋Šฅ ์ข…๋ฃŒ END // -- ํ•จ์ˆ˜ .. 2023. 11. 29.
[Database] HeidiSQL ์กฐ์ธ [ํฌ๋กœ์Šค ์กฐ์ธ(Cross Join), ์ด๋„ˆ์กฐ์ธ(Inner Join), ์•„์šฐํ„ฐ ์กฐ์ธ(Outer Join), ์…€ํ”„ ์กฐ์ธ(Self Join)], union, exists, update ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์„ธ๊ณ„๋ฅผ ํƒ๊ตฌํ•ฉ์‹œ๋‹ค. - Inner Join ๋ฐฉ์‹์€ : ์ผ๋ฐ˜๋ฐฉ์‹ or ํ‘œ์ค€๋ฐฉ์‹ ๋ชจ๋‘ ํ‘œ์ค€์ฒ˜๋Ÿผ ์‚ฌ์šฉ๋จ (Inner Join - ์ผ๋ฐ˜๋ฐฉ์‹) Select ํ…Œ์ด๋ธ”1.์ปฌ๋Ÿผ1...ํ…Œ์ด๋ธ”n.์ปฌ๋Ÿผ1 From ํ…Œ์ด๋ธ”1, ํ…Œ์ด๋ธ”2 .... ํ…Œ์ด๋ธ” n Where ๊ด€๊ณ„์กฐ๊ฑด(PK = FK) And ์ผ๋ฐ˜์กฐ๊ฑด (Inner Join - ํ‘œ์ค€๋ฐฉ์‹) Select ํ…Œ์ด๋ธ”1.์ปฌ๋Ÿผ1...ํ…Œ์ด๋ธ”n.์ปฌ๋Ÿผ1 From ํ…Œ์ด๋ธ”1 Inner Join ํ…Œ์ด๋ธ”2 On(๊ด€๊ณ„์กฐ๊ฑด(PK = FK) And ์ผ๋ฐ˜์กฐ๊ฑด) Inner Join ํ…Œ์ด๋ธ” n On(๊ด€๊ณ„์กฐ๊ฑด(PK = FK) And ์ผ๋ฐ˜์กฐ๊ฑด) Group By - ๊ทธ๋ฃน์ด ์žˆ๋Š” ๊ฒฝ์šฐ Having - ๊ทธ๋ฃน ์กฐ๊ฑด์ด ์žˆ๋Š” ๊ฒฝ์šฐ Order By - ์ •๋ ฌ์ด ์žˆ๋Š” ๊ฒฝ์šฐ 1. Join์˜ ์ข…๋ฅ˜ ํฌ๋กœ์Šค ์กฐ์ธ(Cross J.. 2023. 11. 28.

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