Question

Table:

Date = 20120101, ID = 123456, ParentID = 654321, System1 = 1, System2 = 1

User can be active in System1, System2, or both (1 = true, 0 = false). Query needs to output as follows:

System1   System2
1         0            "System1", "All"
0         1            "System2", "All"
1         1            "System1", "System2", "All"
0         0            "All"

I was trying a case statement but I couldn’t get it to output how I wanted.

Answer 1

I’m getting the idea that you want to generate multiple rows for each row in your data.

If so, the following does this:

select a.*
from ((select t.*, 'ALL' as thecode
       from t
      ) union all
      (select t.*, 'System1'
       from t
       where system1 = 1
      ) union all
      (select t.*, 'System2'
       from t
       where system2 = 1
      )
     ) a