Difference between Decode and Case?
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Answer Posted / suman vyas
1) Case Can work with logical operator other than '=' . such as < , > , = < , >=
where Decode performs an equality check only.
2) Decode can work as function inside SQL only,
where Case can work in Pl/Sql as a substitute of IF-THEN-ELSE.
3) Decode can not process Null , where Case can process Null.
4) Case expects datatype Consistency, Decode Dose not.
5) Decode is a function, where Case is a statement.
hope this will give u satisfied Answer for Difference Between CASE AND DECODE.
Thanks
Suman Vyas
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