Question
Differ between DECODE and CASE?
Answers
DECODE and CASE statements are very similar, but CASE is extended version of DECODE. DECODE does not allow Decision making statements in its place.
select decode(totalsal=12000,’high’,10000,’medium’) as decode_tesr from smp where smpno in (10,12,14,16);
This statement returns an error.
 
CASE is directly used in PL SQL, but DECODE is used in PL SQL through SQL only.
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