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issue #1068: added PERCENTILE function

This commit is contained in:
Jan Steemann 2014-11-14 13:34:48 +01:00
parent ac667d5e5a
commit d1d176d2fd
2 changed files with 8 additions and 2 deletions
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2
CHANGELOG
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@ -20,7 +20,7 @@ v2.3.0 (XXXX-XX-XX)
* added AQL string functions `LTRIM`, `RTRIM`, `FIND_FIRST`, `FIND_LAST`, `SPLIT`,
`SUBSTITUTE`
* added AQL functions `ZIP` and `VALUES`
* added AQL functions `ZIP`, `VALUES` and `PERCENTILE`
* made AQL functions `CONCAT` and `CONCAT_SEPARATOR` work with list arguments

8
Documentation/Books/Users/Aql/ListFunctions.mdpp
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@ -48,6 +48,12 @@ AQL supports the following functions to operate on list values:
list is empty or only *null* values are contained in the list, the function will return
*null*.
- *PERCENTILE(list, n, method)*: Returns the *n*th percentile of the values in *list*.
This requires the elements in *list* to be numbers. *null* values are ignored. *n* must
be between 0 (excluded) and 100 (included). *method* can be *rank* or *interpolation*.
The function will return null if the list is empty or only *null* values are contained
in it or the percentile cannot be calculated.
- *VARIANCE_POPULATION(list)*: Returns the population variance of the values in
*list*. This requires the elements in *list* to be numbers. *null* values
are ignored. If the list is empty or only *null* values are contained in the list,
@ -169,4 +175,4 @@ AQL supports the following functions to operate on list values:
Apart from these functions, AQL also offers several language constructs (e.g.
*FOR*, *SORT*, *LIMIT*, *COLLECT*) to operate on lists.
*FOR*, *SORT*, *LIMIT*, *COLLECT*) to operate on lists.