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SELECT 
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SELECT
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  l1.LAB_NAME AS LAB,
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  l.LAB_NAME,
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  l2.LAB_NAME AS BOSS,
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  l.SALARY,
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  l1.SALARY AS LAB_SALATY,
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  d.DEP_NAME
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  l2.SALARY AS BOSS_SALATY
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  LABORING l,
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  LABORING l1,
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  DEPARTAMENT d,
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  LABORING l2
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WHERE l1.LAB_BOSS_ID = l2.LAB_ID
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(SELECT
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  AND l1.SALARY > l2.SALARY
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  d.DEP_ID,
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  MAX(l.SALARY) AS SALARY_MAX
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FROM 
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  LABORING l, 
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  DEPARTAMENT d
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WHERE l.DEP_ID = d.DEP_ID
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GROUP BY l.DEP_ID) sq
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  WHERE l.DEP_ID = sq.DEP_ID
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    AND l.SALARY = sq.SALARY_MAX
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    AND d.DEP_ID = sq.DEP_ID