Question

I was asked to do a search against our database and to explain the number of clients in the 5 different age ranges. I know I can run the same query five times. However, i was hoping to be able to create one query that would do the whole job.

To my knowledge, I need to do 5 queries and then use “UNION” to connect the different queries.

The issue is that for each query i want to add a column that says “age range” and then put some text to name the group.

The SQL I came up with was:

SELECT     COUNT(CLIENT_ID) AS Client_Count, "0 to 19" AS [Age Group]
FROM         dbo.CLIENTS
WHERE     (DATEDIFF(year, DOB, GETDATE()) BETWEEN 0 AND 19)

While I hoped this would work, it expects the 0 to 19 to be a column. How would I let it know that I’m just trying to pass it a fixed value?

Once I get this to work, they would then like that I the values as a percentage of the total. Any help is appreciated.

Answer 1

This should work. Try single quotes.

SQL uses single quotes to denote string text. Seems like it would be able to interpret double quotes, but there you have it.