Which formula counts distinct appointments on a date with duplicate client numbers?

One Response

1. 

   MWAdminAuthor March 14, 2025 at 6:36 pm

   To count distinct appointments for a specific date when client numbers may be duplicated, you can use different formulas depending on the platform you’re using (Excel, SQL, etc.). Here are examples for both Excel and SQL:

   In Excel

   Assuming you have a table with the columns Date and ClientNumber, you can use the following formula with a pivot table, or you can use a combination of functions:

   1. Using a Pivot Table:

   2. Create a pivot table with Date in the rows area and ClientNumber in the values area (set to “Count”). This will show you the number of appointments, though it won’t automatically give distinct counts.

   3. Using an Array Formula (Excel 365 or 2021):
      If you want to count distinct clients for a specific date in a range (for example, A2:A100 for Dates and B2:B100 for ClientNumbers):
      excel
=COUNTA(UNIQUE(FILTER(B2:B100, A2:A100 = "2023-10-01")))
      Replace "2023-10-01" with your specific date.

   In SQL

   If you are querying a database, you can use a query like the following:

   sql
SELECT COUNT(DISTINCT ClientNumber) AS DistinctClientCount
FROM Appointments
WHERE AppointmentDate = '2023-10-01';
   Make sure to replace '2023-10-01' with your specific date and Appointments with your actual table name.

   These methods will help you get the total count of distinct appointments for a specific date.