philihp.com » Count http://www.philihp.com/blog I do things, and then I tell the internet about them. Mon, 06 Feb 2012 05:40:30 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Counting distinct variables in SQL with SAS http://www.philihp.com/blog/2009/counting-distinct-variables-in-sql/ http://www.philihp.com/blog/2009/counting-distinct-variables-in-sql/#comments Mon, 26 Oct 2009 06:44:45 +0000 philihp http://www.philihp.com/blog/?p=504 One way to get the count of distinct variables, which works in most flavors of SQL, is to use a subquery. For instance, in Oracle this is:

SELECT count(SELECT DISTINCT foo FROM table) FROM dual

In SAS, using PROC SQL, you can do that too, but you can also simply do this:

SELECT count(distinct foo) FROM table
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