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JiYoung Dev ๐ฅ
[database ๊ณ ๊ธ] ์ธ๋ฑ์ค (2023.08.09) ๋ณธ๋ฌธ
FULL SCAN
์ธ๋ฑ์ค
์ธ๋ฑ์ค ์์ฑ
CREATE INDEX IDX_PRD ON TB_PRD ( PRD_TYPE ) ;
์ธ๋ฑ์ค ์ฌ์ฉ ๋ชฉ์ : ์กฐํ ์ฑ๋ฅ ํฅ์
๋์ DML ์ฑ๋ฅ์ด ๊ฐ์ํจ
์ธ๋ฑ์ค ํ์ฉ : NL์กฐ์ธ (Nested Loop / ์ค์ฒฉ์กฐ์ธ)
์ธ๋ฑ์ค์ ํจ๊ป ์ฌ์ฉํ์ ๋ ํจ์จ์ด ๋์์ง
ํน์ง
- PRIMARY KEY ์์ฑ ==> ์์ด์ ๊ทธ PK์ ๋ํ ์ธ๋ฑ์ค ํ๋ ์์ฑ๋จ
๋ค๋ฅธ ๊ฒฝ์ฐ์๋ ์ง์ ์ธ๋ฑ์ค๋ฅผ ์์ฑํด์ผ ํจ
'full stack > database' ์นดํ ๊ณ ๋ฆฌ์ ๋ค๋ฅธ ๊ธ
[database ๊ณ ๊ธ] ํ๋ก์์ (2023.08.09 ~ 10) (0) | 2023.08.09 |
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[database ๊ณ ๊ธ] ๊ณ์ธต ์ฟผ๋ฆฌ (2023.08.09) (0) | 2023.08.09 |
[database ๊ณ ๊ธ] ์๋์ฐ ํจ์ (2023.08.09) (0) | 2023.08.09 |
[database ๊ณ ๊ธ] ์งํฉ์ฐ์ฐ์ (2023.08.08) (0) | 2023.08.08 |
[database ๊ณ ๊ธ] CTAS (2023.08.08) (0) | 2023.08.08 |