Question

I have the below query:

select 
  CASE WHEN rt.ROLE_TYPE_CD = 'SA' THEN ap.APPL_CD + ' ' + rt.ROLE_TYPE_CD
       WHEN ap.APPL_SID = 1 THEN  rt.ROLE_TYPE_CD  
       ELSE NULL
       END as dropdownName,   
  rt.role_type_sid as dropdownID,   
  rt.actv_ind as active,   
  'Application Role' as dropdownCatagory        
 from cdms_role_type rt   
 INNER JOIN CDMS_APPLICATION ap  
 ON rt.APPL_SID = ap.APPL_SID
 where role_type_cd != 'All Role Types'
 **AND (CASE WHEN rt.ROLE_TYPE_CD = 'SA' THEN ap.APPL_CD + ' ' + rt.ROLE_TYPE_CD
       WHEN ap.APPL_SID = 1 THEN  rt.ROLE_TYPE_CD END ) IS NOT NULL**

I want to avoid the last AND condition and still want to get rid of NULL values in dropdown column.How do I go for it? Please help

Answer 1

Filter out only the records that would produce a non-null value:

select 
  CASE WHEN rt.ROLE_TYPE_CD = 'SA' THEN ap.APPL_CD + ' ' + rt.ROLE_TYPE_CD
       ELSE rt.ROLE_TYPE_CD
       END as dropdownName,   
  rt.role_type_sid as dropdownID,   
  rt.actv_ind as active,   
  'Application Role' as dropdownCatagory        
 from cdms_role_type rt   
 INNER JOIN CDMS_APPLICATION ap  
 ON rt.APPL_SID = ap.APPL_SID
 where role_type_cd != 'All Role Types'
   and (rt.ROLE_TYPE_CD = 'SA' or ap.APPL_SID = 1)