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SUBSET

Returns a set of elements from a given set, by position. The first member is at position 0.

Returned Type

This function returns a set.

Syntax and Details

SUBSET(set_expression, first_element_position, optional_element_count)

Where:

  • set_expression is an expression that evaluates to a set.

  • first_element_position is an integer literal that specifies the position of the first element to return.

    The position of the first element is 0.

  • optional_element_count is an integer literal that specifies the position of the number of element to return.

    If you omit this argument, the function returns the element at first_element_position and all elements that follow it.

Example

SELECT MEASURES.[%COUNT] ON 0, SUBSET(homed.city.MEMBERS, 0, 3) ON 1 FROM patients

                             Patient Count
1 Cedar Falls                         1,188
2 Centerville                         1,155
3 Cypress                             1,221
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In contrast, consider this example, which shows the complete set:

SELECT MEASURES.[%COUNT] ON 0, homed.city.MEMBERS ON 1 FROM patients

                             Patient Count
1 Cedar Falls                         1,188
2 Centerville                         1,155
3 Cypress                             1,221
4 Elm Heights                         1,266
5 Juniper                             1,197
6 Magnolia                            1,156
7 Pine                                1,139
8 Redwood                             1,144
9 Spruce                              1,135
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