Oracle PL/SQL: STDDEV POP - STDDEV POP computes the population standard deviation and returns the square root of the population

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Snippet Name: STDDEV_POP

Description: STDDEV_POP computes the population standard deviation and returns the square root of the population variance. This function is the same as the square root of the VAR_POP function. When VAR_POP returns null, this function returns null.

Parameters:
expr â€“ Number expression.

Also see:
» RANK
» REGR_SLOPE
» VARIANCE
» VAR_SAMP
» VAR_POP
» SUM
» STDDEV_SAMP
» STDDEV
» ROW_NUMBER
» REGR_SYY
» REGR_SXY
» REGR_SXX
» REGR_R2
» REGR_INTERCEPT
» REGR_COUNT
» REGR_AVGY
» REGR_AVGX
» Number Functions: RATIO_TO_REPORT
» Number Functions: RANK
» PERCENTILE_DISC
» PERCENTILE_CONT
» PERCENT_RANK
» OVER PARTITION BY
» NTILE
» MIN
» MAX
» LEAD
» LAST_VALUE
» LAST
» LAG

Comment: (none)

Language: PL/SQL
Highlight Mode: PLSQL
Last Modified: March 10th, 2009

STDDEV_POP(<expression>) OVER (<analytic_clause>)
 
conn oe/oe
 
SELECT department_id, last_name, salary,
STDDEV_POP(salary) OVER (PARTITION BY department_id) AS pop_std
FROM employees;