ํฐ์คํ ๋ฆฌ ๋ทฐ
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SMALL
๊ฐ์ ํ ์ด๋ธ ์์์ count(*) ๊ฐ์ ํ ์ปฌ๋ผ์ ์ ๋ฐ์ดํธ ํ ๋.
MERGE INTO dept d
USING (SELECT deptno, COUNT (*) cnt
FROM emp
WHERE job = 'CLERK'
GROUP BY deptno) e
ON (e.deptno = d.deptno)
WHEN MATCHED THEN
UPDATE SET d.dept_count = e.cnt;
...
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LIST
'PROGRAMMING' ์นดํ ๊ณ ๋ฆฌ์ ๋ค๋ฅธ ๊ธ
svn ์ถฉ๋ (0) | 2012.02.21 |
---|---|
์นํ์ค ํผ ๊ตฌ์ฑ (0) | 2012.01.13 |
์ค๋ผํด alter... (0) | 2011.10.25 |
๋จ์ด๊ธฐ์ค ๊ฐํ CSS - word-break:keep-all (0) | 2011.01.27 |
์ด๋ฒ์ฃผ๋ง์ ๊ณต๋ถํ ๋ด์ฉ. (0) | 2010.10.22 |
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