I have two columns in a table.
I need to find the number of rows in which Rating_a is not equal to Rating_b and then divide that number by the total number of rows in the table. Basically, I need to find the percentage of where the values differ. Could someone please help me with this? I think using the COUNT function could work. Help would be appreciated. Thank you.
Here's a sample (actual table has 1000s of rows) of how it looks like:
Rating_a | Rating_b |
1 | 1 |
2 | 3 |
4 | 4 |
4 | 1 |
3 |
3 |
proc sql;
select sum(rating_a = rating_b) / count(*) as percentage format=percent7.2 from have;
quit;
proc sql;
select sum(rating_a = rating_b) / count(*) as percentage format=percent7.2 from have;
quit;
Would there ever be missing values? How would those be handled?
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