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USE Study
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GO
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-- <EFBFBD>캰 <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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SELECT ENAME, SALARY, DNO, RANK() OVER (PARTITION BY DNO ORDER BY SALARY DESC) AS RANK_DEPT
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FROM EMPLOYEE
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-- <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 2<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>μ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <EFBFBD≯<EFBFBD>, <EFBFBD><EFBFBD>, <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD>ȸ
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SELECT *
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FROM
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(SELECT DNO, ENAME, SALARY, RANK() OVER (PARTITION BY DNO ORDER BY SALARY DESC) AS RANK_VALUE
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FROM EMPLOYEE) AS TEMP
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WHERE RANK_VALUE = 2
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-- <EFBFBD>캰 <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>Լ<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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SELECT DISTINCT DNO, AVG(SALARY) OVER (PARTITION BY DNO) FROM EMPLOYEE
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SELECT DISTINCT DNO, AVG(SALARY) FROM EMPLOYEE GROUP BY DNO
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