SELECT AVG(SALARY) FROM EMP yields inaccurate results. Why?

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Krishna
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SELECT AVG(SALARY) FROM EMP yields inaccurate results. Why?

Post by Krishna » Sun Mar 29, 2009 9:54 pm

My SQL statement SELECT AVG(SALARY) FROM EMP yields inaccurate results. Why?

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Krishna
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Post by Krishna » Sun Mar 29, 2009 9:55 pm

Because SALARY is not declared to have NULLs and the employees for whom the salary is not known are also counted.

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