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Asked: 2026-05-15T08:27:09+00:00

This is really dumb question but still my head cannot work it out. I

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This is really dumb question but still my head cannot work it out.
I have a table with Orders, each order has userID in it. User can have unlimited amount of Orders. How do i make count of unique userIDs ?

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1 Answer

  1. Editorial Team

    You can;

    SELECT COUNT(DISTINCT userID) 
FROM Tbl

    You can give the count column a name by aliasing it:

    SELECT COUNT(DISTINCT userID)  NumberOfDistinctUsers
FROM Tbl
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