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๊ด€๊ณ„ํ˜• ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค(RDBMS) - ์„œ๋ธŒํ€ด๋ฆฌ & JOIN Heidi SQL : workbench ๋Š๋‚Œ ์˜คํƒ€์ˆ˜์ •์ด ์‰ฝ๊ณ  ๊ฒฐ๊ณผ๋ฅผ ํ•œ๋ˆˆ์— ๋ณด๊ธฐ ํŽธ๋ฆฌํ•จ MariaDB์—์„œ ์ œ๊ณต == ์„œ๋ธŒ์ฟผ๋ฆฌ : ๋ฐ˜๋“œ์‹œ ๋ณ„์นญ์„ ๋ถ™์—ฌ์•ผํ•จ == why? select ์ ˆ ์ปฌ๋Ÿผ๋ช… ์•ž์—๋Š” ํ…Œ์ด๋ธ”์˜ ์ด๋ฆ„์ด ์ƒ๋žต๋˜์–ด์žˆ๋Š”๊ฒƒ์ž„ ๋ณ„์นญ์„ ๋”ฐ๋กœ ์ ์ง€์•Š์œผ๋ฉด ํ…Œ์ด๋ธ”์„ ์ธ์‹ํ•˜์ง€ ๋ชปํ•จ [from] [select ] [where] ==JOIN== ๋‘๊ฐœ ์ด์ƒ์˜ ํ…Œ์ด๋ธ”์—์„œ ๋‘ ํ…Œ์ด๋ธ”์˜ ๋ ˆ์ฝ”๋“œ๋ฅผ ์กฐํ•ฉํ•˜๋Š”๊ฒƒ -pull join = straight join : ์‚ฌ์šฉํ•  ์ผ์ด ๊ฑฐ์˜ ์—†์Œ SELECT * FROM book_category, book; -theta join : pull join ๊ณผ staraight join ์— where ์กฐ๊ฑด์ ˆ์„ ์‚ฌ์šฉํ•˜์—ฌ ํ•„์š”ํ•œ ์ •๋ณด๋งŒ์„ ์ถœ๋ ฅ SELECT book.id, bc_name, bk_nam..

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