FieldValueCount - script and chart function

FieldValueCount() is an integer function that finds the number of distinct values in a field.

Syntax:  

FieldValueCount(field_name)

Return data type: integer

Arguments:  

Argument Description
field_name Name of the field for which the value is required. For example, the column in a table.Must be given as a string value. This means that the field name must be enclosed by single quotes.

Examples and results:  

The following examples use the field: First name from the tableNames.

Examples Results

Add the example data to your app and run it.

The table Names is loaded, as in the sample data.

Chart function: In a table containing the dimension First name, add as a measure:

 

FieldValueCount('First name')

5 as Peter appears twice.

FieldValueCount('Initials')

6 as Initials only has distinct values.

Script function, Given the table Names is loaded, as in the example data:

 

John1:

Load FieldValueCount('First name') as MyFieldCount1

Resident Names;

MyFieldCount1=5, because 'John' appears twice.

John1:

Load FieldValueCount('Initials') as MyInitialsCount1

Resident Names;

MyFieldCount1=6, because 'Initials' only has distinct values.

Data used in example:

Data used in examples:

Names:

LOAD * inline [

First name|Last name|Initials|Has cellphone

John|Anderson|JA|Yes

Sue|Brown|SB|Yes

Mark|Carr|MC |No

Peter|Devonshire|PD|No

Jane|Elliot|JE|Yes

Peter|Franc|PF|Yes ] (delimiter is '|');

 

FieldCount1:

Load FieldValueCount('First name') as MyFieldCount1

Resident Names;

 

FieldCount2:

Load FieldValueCount('Initials') as MyInitialsCount1

Resident Names;