Unique count for Statistics Box

[#1]

How can I get a unique count? I tried the Statistics box but this gave me a total count. I have a customer ID and their spend. Looking at the chart below, I just want to see how many unique customers I have. For example, below would be 3 unique customers (1234, 5678. 7890). I don't need their spend, just a count of how many customers.

ID	Spend
1234	$10
1234	$10
1234	$10
5678	$10
7890	$10

[sunny_talwar]

May be this:

Count(DISTINCT ID)

[Chanty4u · Accepted solution]

=Count(Distinct Field)

[#4]

Count(Distinct Field)

[Anonymous]

Where to add "Count(Distinct Field)" as there is not "Expression tab" in Qlikview Statistics Box.