SQL - how to count unique combination of columns

Question

I\'m not sure if this is possible but I want to count the number of unique value in a table. I know to count the number of unique folderIDs I do:

select count(f         


        

Answer 1

select APPRSL_ID,SECTION_ID, count(APPRSL_ID||SECTION_ID)
from REMARKSBYEACHSECTION 
group by APPRSL_ID,SECTION_ID
having count(APPRSL_ID||SECTION_ID)>1 ;