I've have a table of records its the 'Many' of a One to many relationship. It includes Age and a Value. The ID comes from a Contacts Table. I've got a Summary field working perfectly except now I would like to have it only count the records with a unique ID.

The values are sorted by age. I need to know how many people had a record at an age not how many records I have at that age.

Example

ID Age Value

223 9 10

223 9 15

276 9 12

So my summary would be 2 not 3 (3 is the current value i'm getting).

From your data, there are only three 9s in the age column, so wouldn't the unique count be 1?

I'd be using the custom function UniqueValues() combined with the List() function and ValueCount()...

ValueCount( UniqueValues( List( relationship::age ) ) )

The UniqueValues function is posted on Brian Dunnings web site.

I need to know how many people had a record at an age

The context is not clear. Are you talking about one specific age (e.g. entered into a global), or is this in the context of a report?

its in the context of the report.

Sorry i'm never good at typing this stuff out. But the request is to give a count of records for each age between ages 9 and 13 with a value between 8 and 25. but only count each contact once at each age.

The probably no more clean than the last explanation. Sorry.

You need three fields for this:

sCount = Summary, Count of SerialID (or any field that cannot be empty)

cInvCountByContact = 1 / GetSummary ( sCount ; ContactID )

sCountContacts = Summary, Total of cInvCountByContact

Sort your records by Age, then ContactID.