CASE statement inside DECODE

Question

Hi All,
I am trying to use a CASE logic inside a DECODE function while selecting data from a table. But unable to get the correct syntax. Is there something that I might be missing?
My snippet looks like -
SELECT DECODE(CASE WHEN COL2 > 10 THEN 'HIGH', WHEN COL2 < 10 THEN 'LOW' END RANGEVALUE, 'HIGH', 'YES','LOW','NO','N/A')
FROM TEST_TABLE;My table looks like -
TEST_TABLE
COL1 VARCHAR2(10),
COL2 NUMBER(8,0)

Answer 1

Chaitanya wrote:
My snippet looks like -
SELECT  DECODE(
               CASE
                 WHEN COL2 > 10 THEN 'HIGH'
                 WHEN COL2 < 10 THEN 'LOW'
               END,
               'HIGH','YES',
               'LOW','NO',
               'N/A'
  FROM  TEST_TABLE
/But it is an overkill:
SELECT  CASE
          WHEN COL2 > 10 THEN 'YES'
          WHEN COL2 < 10 THEN 'NO'
          ELSE 'N/A'
        END
  FROM  TEST_TABLE
/Or, if you wnat to use DECODE:
SELECT  DECODE(
               SIGN(COL2 - 10)
               1,'YES'
               -1,'NO',
               'N/A'
  FROM  TEST_TABLE
/SY.