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DEPT_AVG_SALS(DNUMBER,AVG_SAL) DNO f AVG SALARY (EMPLOYEE) RESULT DNUMBER,AVG_SAL (DEPT_AVG_SALS DEPARTMENT) DNUMBERAVG_SAL Administration 31000 Headquarters 55000 DNUMBERAVG_SAL Research 33250 Administration 31000 Headquarters 55000 Result (empty) DNUMBERAVG_SAL
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