17.10 - Examples of Character Data in a CASE Expression: Example 4 - Advanced SQL Engine - Teradata Database

One THEN/ELSE expression in the following query has a Latin column. The query is successful and the result data type is Latin because the other literals can be successfully translated to Latin.

   SELECT i, CASE
               WHEN i=1 THEN 'abc'
               WHEN i=2 THEN column_l
               ELSE 'def'
             END
   FROM table_1
   ORDER BY 1;