Functions Reference

Chapter 2
|
Aggregate functions 27
In the following examples:
• Field1 contains two repetitions with values of 1 and 2.
• Field2 contains four repetitions with values of 5, 6, 7, and 8.
• Field3 contains 6.
If the calculation result isn’t a repeating field:
Sum(Field2) returns 26.
Sum(Field1;Field2;Field3) returns 12.
If the calculation result is a repeating field:
Sum(Field2) returns a repeating field with 26 in the first repetition.
Sum(Field1;Field2;Field3) returns a repeating field with 12, 8, 7, 8.
Note When a referenced field is a repeating field, the Sum function returns the sum of the
first repetition field, then the sum of the second repetition field, and so on.
Variance
Format
Variance(field{;field...})
Parameter
field - any related field, repeating field, or set of non-repeating fields; or an expression
that returns a field, repeating field, or set of non-repeating fields.
Parameters in curly braces { } are optional.
Data type returned
number
Description
Returns the variance of a sample represented by a series of non-blank values. The
variance of a distribution is a measure of how spread out the distribution is. Use this
function on any of the following fields:
• a repeating field (repeatingField).
• a field in matching related records specified by (table::field), whether or not
these records appear in a portal.
• several non-repeating fields in a record (field1;field2;field3...).
• corresponding repetitions of repeating fields in a record
(repeatingField1;repeatingField2;repeatingField3), if the result is
returned in a repeating field with at least the same number of repeats.