How to CHECK WHETHER LOWER CASE OR UPPER CASE IN CUSTOM TABLE

Question

Dear Friends,
                 I have a requirement where from  the flat file  i have collected into the internal table is as below :
  IDNo.     Name     Date      Location   Designation  Dept
  101       raja      4/12/2007  Delhi      manager      HR
  102       james    4/12/2007  Delhi      clerk          HR
now iam checking against my custom table where iam   if the designation for the employee name already exists then i shouldnt modify/update the custom table that record
  now iam facing a problem where is the flat file is always having the Lower Case only ,
as per the scenario  if my custom table already have the employee name i shouldnt modify/update i.e i shouldnt overwrite,
this scenario is working but it is failing in the case
by chance in the Custom table the employee name or designation is in Upper Case  the condition where iam checking in the code  is failing as the flat file data coming into the internal table is having always lower Case.
So could any one please let me know how i should check in my custom table whether iam having upper case or lower case and how can i make it lower case ?
because iam able to manage in the case where if the flat file data coming in Upper case i can check before only by
using Translate to lower case . how i unalbe to  check for the data coming from the Custom table if  in Uppercase , so i want to change that to lower case then checking my condition whether that data already exists in my custom table before modifying the data coming from the flat .
because the condition is failing when the data in the custom table is in upper case and the Flat file data is in lower case.
please help how i can check for the data in the Custom table is in upper case and then change it to lower case.
Regards
Madhuri.

Answer 1

Hi Madhuri,
Translate both data in your flat file & custom table to lowercase before comparing them. With that, you're able to identify if there's a differences in for both data.
If you're putting data that is pulled from custom table, what you can do is after selecting/reading the data, translate to lowercase or uppercase (whichever you prefer) but make sure if you translate to lowercase, your data in the flat file must be lowercase to and vice versa.
Happy doing !!..
Regards,
Loo