Drills down on any members or tuples of set1 that are also found in set2. The resulting set contains the drilled-down members or tuples, as well as the original members or tuples (whether they were expanded or not).
DrilldownMember( set1, set2 [, RECURSIVE] )
set1
|
The set containing members or tuples to drill down on if comparison with set2 tests positive for identical members or tuples. |
set2
|
The set to compare with set1 before drilling down on members or tuples in set1. |
RECURSIVE
|
Optional. A keyword to enable repeated comparisons of the sets. |
This function drills down on all members of set1 that are also found in set2. The two sets are compared. Then the members or tuples of the first set that are also present in the second set are expanded to include their children.
If the first set is a list of tuples, then any tuples in the first set that contain members from the second set are expanded to their children, generating more tuples.
If the RECURSIVE
keyword is used, multiple passes are made on the expanded result sets. Drilldownmember repeats the set comparison and resulting drilldown until there are no more unexpanded members or tuples of set1 that are also present in set2.
Drilling Down on Members
Drilling Down on Tuples
The following examples drill down on members.
Example 1
The following expression
DrilldownMember({East, West, South}, {East, Washington, California})
returns the set:
{ East, [New York], Massachusetts, Florida, Connecticut, [New Hampshire], West, South }
Therefore, the following query
SELECT DrilldownMember({East, West, South}, {East, Washington, California}) ON COLUMNS FROM Sample.Basic
returns the grid:
East | New York | Massachusetts | Florida | Connecticut | New Hampshire | West | South |
---|---|---|---|---|---|---|---|
24161 | 8202 | 6712 | 5029 | 3093 | 1125 | 29861 | 13238 |
Example 2
The following expression
DrilldownMember({Market, [New York]}, {Market, West}, RECURSIVE)
returns the set:
{Market, East, West, California, Oregon, Washington, Utah, Nevada, South, Central, [New York]}
The member Market
is drilled down and then the West
member
of the resulting set is drilled down, because the RECURSIVE parameter was specified.
This example uses the following part of the Sample Basic outline:
The following example drills down on tuples.
The following expression
DrilldownMember ( {([100],[California]), ([200],[Washington])}, { [100] } )
returns the set of tuples:
{ ([100],California), ([100-10],California), ([100-20],California), ([100-30],California), ([200],Washington)}
Therefore, the following query
SELECT DrilldownMember ( {([100],[California]), ([200],[Washington])}, { [100] } ) ON COLUMNS FROM Sample.Basic
returns the grid:
100 | 100-10 | 100-20 | 100-30 | 200 |
---|---|---|---|---|
California | California | California | California | Washington |
999 | 3498 | -1587 | -912 | 1091 |
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