Question

Can anyone help me with the proper syntax for a “case” statement using SQL Plus?

Select 
sum(case "REQUEST AGE" when >= 60 then 1 else 0) as "60+ Days",
sum(case "REQUEST AGE"  when >= 30 and case when "REQUEST AGE" < 60 then 1 else 0) as "30-    60 Days",
sum (case "REQUEST AGE" when < 30 then 1 else 0) as "Less Than 30 Days",
"SECTOR"
FROM Schema.APPDATA
Where Schema.APPDATA."SECTOR" like '%X%'

I’m relatively new to SQL and I have never written such a query. I would like a sum of a case when the column request age is greater than 60, between 30 and 60 and less than 30 as 3 columns grouped by column sector

Answer 1

You need to use CASE WHEN [expression]... THEN rather than CASE [variable] WHEN [value] THEN ... :

Select 
sum(case WHEN "REQUEST AGE" >= 60 then 1 else 0 end) as "60+ Days",
....

Also, it seems that count is more appropriate in your case than sum – you won’t need else at all.