Answer / pari

Decode
1.It’s a function
2.can compare only discrete vaules
3.Pl/Sql standards
4.cannot process null

Case
1.It's an Expression
2.can hande range values
3.ANSI Standards
4.Processing time is faster when compared to Decode
5.can process null

Answer / judith

Decode
The default operator for comparison is '=',
for e.g select deptno,decode
(deptno,10,'dept10',20,dept20,default)

so if the deptno=10 then the value is replaced by dept10
and so on,

whereas in Case:

we can use any operator other than '=',
for e.g
select deptno,
case when deptno=10 and sal>1000 then 'dept10'
else
'dept20'

Hope the difference is made clear.

Regards,
Judith

Answer / vasu

Decode: using for reporting purpose. and it is implemented
by if stmt.
Ex: select decode(job,'CLERK','executive',job) from emp;

Case : implemented by if & elsif condition. it is using
pl/sql equality conditionality.
Ex : select case job='CLERK' then 'executive' else 'no' end
a from emp;

it is also used for multipul colms & multi conditions.

in above stmt a is reffered alias name.

Answer / 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

Answer / satishe

Decode and Case functionwill work in the same way.the only
difference is we can write conditions in side the case
function.
for Ex;
case(if c>d,d...)
decode(job,'clerk'...)

Answer / gurujothi

*CASE can only be used inside the SQL statement where as CASE can be used anywhere even as a parameter of a function or procedure.
*Decode can do equality check only but Case can do more logic comparisons such as <,>etc.,
*The Case will handle NULL differently

Answer / zeya.ocp

CASE Expr make u use IF-THEN-ELSE logic in sql statements without to invoke procedure.It complies with ANSI SQL.
DECODE function decode an expr in a way similar to IF-THEN-ELSE logic that is used in various languages.it facilitate conditional inquiries.

Answer / neeraj

Can anyone explain me Null value handle by Case & Decode with Example.

i want to hide a chart in reporting level? i want to hide a prompt in designer level?

1 Answers   TCS,

what is projection function in SAP BO

1 Answers   Cap Gemini,

What is broad cast agent?

5 Answers  

What do you mean by Object qualification?

3 Answers  

explain about Prompt with example?

4 Answers   CSC,

I have only 1 dataprovider and using that i have to create 2 tabular report on Webi on same page. One report will display all the salary details and other report will display only max salary. How will you achieve this.

2 Answers   L&T,

why do we use crystal reports rather than webintelligence reports ?

7 Answers   CTS, Tech Mahindra,

how to creat 2 way drilling mode.can any one know this

0 Answers  

Explain the data types present in bo and what happens if we implement view in the designer and report?

0 Answers  

What are all the points to keep in consideration, while we are migrating the Universes,Reports from BO5.1.6 to BO 6.5? Is is compatible to migrate like this? Does it effect the filters in Reports and Join in the Universe?

0 Answers   Infosys,

Can we do the slice and dice in webintellegence?

5 Answers   IBM,

what are the complex reports you have created. Tell me with example?

7 Answers   Insurance, TCS,