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InterSystems IRIS Data Platform 2019.3 / Application Development / InterSystems MDX Reference / MDX Functions / ANCESTOR
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ANCESTOR

Returns the ancestor of the given member, within the given level.

Returned Type

This function returns a member.

Syntax and Details

ANCESTOR(member_expression,ancestor_level)
Where:
This function returns the ancestor of the given member, within the given level.

Example

The following query displays the year that is the ancestor of March 24, 1943:
SELECT MEASURES.[%COUNT] ON 0, ANCESTOR(birthd.[Mar 24 1943],birthd.year) ON 1 FROM patients
 
                             Patient Count
1943                                     76
In contrast, the following query displays the period that is the ancestor of March 24, 1943:
SELECT MEASURES.[%COUNT] ON 0, ANCESTOR(birthd.[Mar 24 1943],birthd.period) ON 1 FROM patients
 
                             Patient Count
Mar-1943                                  5

See Also

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