/ Published in: SQL
A few examples of the STDDEV function.
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SELECT STDDEV(fees_required) FROM student; SELECT STDDEV(DISTINCT fees_required) FROM student; SELECT enrolment_date, TO_CHAR(enrolment_date, 'MON') AS enrolment_mth, STDDEV(fees_required) OVER (ORDER BY TO_CHAR(enrolment_date, 'MON')) AS stdev_val FROM student;
URL: http://www.databasestar.com/oracle-stddev/