How to get a column by applying logical AND operator on two column ?

Question

All column are VARCHAR2 data type.
I have table output in this way :
col1 col2
True True
True False
False FalseBut i want a additional column in this way :
col1 col2 result
True True True
True False False
False False FalseAs the output indicates its clear that resut column is logical AND operator
on col1 and col2. How to achieve this ?

Answer 1

try this
WITH logic AS
     (SELECT 'TRUE' col1, 'TRUE' col2
        FROM DUAL
      UNION ALL
      SELECT 'TRUE' col1, 'FALSE' col2
        FROM DUAL
      UNION ALL
      SELECT 'FALSE' col1, 'TRUE' col2
        FROM DUAL
      UNION ALL
      SELECT 'FALSE' col1, 'FALSE' col2
        FROM DUAL)
SELECT col1, col2,
       CASE
          WHEN 'FALSE' IN (col1, col2)
             THEN 'FALSE'
          ELSE 'TRUE'
       END AS log_and,
       CASE
          WHEN 'TRUE' IN (col1, col2)
             THEN 'TRUE'
          WHEN 'FALSE' IN (col1, col2)
             THEN 'FALSE'
       END AS log_or
  FROM logic 
Explain complete.
PLAN_TABLE_OUTPUT                                                              
| Id  | Operation        | Name | Rows  | Bytes | Cost (%CPU)|                 
|   0 | SELECT STATEMENT |      |     4 |    32 |     8   (0)|                 
|   1 |  VIEW            |      |     4 |    32 |     8   (0)|                 
|   2 |   UNION-ALL      |      |       |       |            |                 
|   3 |    FAST DUAL     |      |     1 |       |     2   (0)|                 
|   4 |    FAST DUAL     |      |     1 |       |     2   (0)|                 
|   5 |    FAST DUAL     |      |     1 |       |     2   (0)|                 
|   6 |    FAST DUAL     |      |     1 |       |     2   (0)|                 
Note                                                                           
   - 'PLAN_TABLE' is old version                                               
16 rows selected.regards,
friend