根据sql语句中的其他字段选择正确的字段

Question

I'm searching for a solution where I can get results based on a field value directly in my sql statement.

For example if I have the following structure:

calculated_result     result_one     result_two     result_three
1                     2.50           3.40           2.90
2                     1.90           2.00           3.90
1                     1.30           2.23           1.50

Then I want to make a search, where it should return all results where calculated_result is 1 and result_one is higher that 2.30 and smaller or equal to 2.65.

The problem is, that I don't know how to only return rows that fits into the search the user is making.

calculated_result = 1 should check for result_one is bigger and smaller than the rows content calculated_result = 2 should check for result_two is bigger and smaller than the rows content etc

Hope it makes sense.

Answer 1

select  *
from    myTable
where   (calculated_result = 1 and result_one between 2.30 and 2.650)
or      (calculated_result = 2 and result_two between 2.30 and 2.650)
or      (calculated_result = 3 and result_three between 2.30 and 2.650)

or, if you wanted to use case

select  *
from    myTable
where   case 
          when calculated_result = 1 then result_one 
          when calculated_result = 2 then result_two
          when calculated_result = 3 then result_three
        end between 2.30 and 2.650