Question

I need to get two summations in the same query based on different criteria. Both criteria operate on the same column.
Is there a way to do this?

I can best explain this with an example:

Table :
salary_survey_result

Columns:
industry,
location,
position,
salary

Effectively I want to combine the following two queries:

SELECT industry, location, count(*) as MORE_THAN_SIX_FIGURE   
FROM salary_survey_result  
WHERE salary > 100000  
GROUP BY industry, location

and

SELECT industry, location, count(*) as MORE_THAN_FIVE_FIGURE  
FROM salary_survey_result  
WHERE salary > 10000  
GROUP BY industry, location

So the result is something like this:
industry location MORE_THAN_FIVE_FIGURE MORE_THAN_SIX_FIGURE

---

Healthcare    NY               45                      10  
Healthcare    MN               35                       6   
InfoTech      NY               50                      19
InfoTech      MN               40                      12

Answer 1

Something like

SELECT industry, 
       location, 
       sum( case when salary >= 10000 then 1 else 0 end) as MORE_THAN_FIVE_FIGURE,
       sum( case when salary >= 100000 then 1 else 0 end) as MORE_THAN_SIX_FIGURE
  FROM salary_survey_result  
  WHERE salary >= 10000  
  GROUP BY industry, location

The WHERE salary >= 10000 clause isn’t necessary for the results. It may improve performance if there is an index on SALARY and most salary values are less than 10000. Note that I’m also assuming that you meant >= rather than > since a salary of 10,000 is a five figure salary.