Question

I am trying to write a SQL Server 2008 query which will output data into subtotaled columns. My SQL skills are pretty poor still, so I could really use some help.

I have two tables, A and B.

A.user (unique) 
A.answer  <- can only be one of two answers, 'Answer1' or 'Answer2' 
B.user (unique) 
B.zip

What I am trying to do is write a SQL statement that generates a four column output that summarizes answer by zip. Like this:

Zip    Answer1    Answer2   Total
----------------------------------
12345     25        22        47
23456     7          0         7
45678     0         15        15

Any sage advice?

Thanks!

-tony

Answer 1

I think that this is what you need:

SELECT B.Zip 
     , SUM(CASE WHEN answer='Answer1' THEN 1 ELSE 0 END)AS Answer1
     , SUM(CASE WHEN answer='Answer2' THEN 1 ELSE 0 END)AS Answer2
     , COUNT(*) AS Total
FROM A INNER JOIN B ON A.[user] = B.[user]
GROUP BY B.Zip

Here’s a fiddle: http://sqlfiddle.com/#!3/60916/2/0