Replacing NULL with 0 in a SQL server query

Question

I have developed a query, and in the results for the first three columns I get NULL. How can I replace it with 0?

  Select c.rund         


        

Answer 1

When you say the first three columns, do you mean your SUM columns? If so, add ELSE 0 to your CASE statements. The SUM of a NULL value is NULL.

sum(case when c.runstatus = 'Succeeded' then 1 else 0 end) as Succeeded, 
sum(case when c.runstatus = 'Failed' then 1 else 0 end) as Failed, 
sum(case when c.runstatus = 'Cancelled' then 1 else 0 end) as Cancelled, 

• SQL Fiddle Demo