Frederico,
What version of Oracle are you using? Starting with 8.1.7, Oracle added CASE to their SQL engine. You can use the same syntax for both. Otherwise, you may have to create a new function and use it in your SQL statement. The new function can make use of the IF ELSIF ELSE END IF syntax.

HTH.
>HELLO *.*
>
>I´m writing an SQL instruction to work with SQL SERVER and ORACLE.
>
>When I'm selecting the fields, I need to use the "CASE" option of the SQL SERVER, like this:
>

>select Fieldx = CASE
>	           WHEN IT.UNIDADE=PRD.UNID1 THEN 1
>                 WHEN IT.UNIDADE=PRD.UNID2 THEN PRD.FACONV
>	         ELSE PRD.FACONV3
>               END
> from ...
>

>Using ORACLE the instruction is:
>

>select Fieldx = (DECODE(IT.UNIDADE,
>                        PRD.UNID1,1,
>                        PRD.UNID2,PRD.FACONV
>                        PRD.FACONV3 ))
>from ...
>

>I used DECODE to compare if the fields was equal, now the question:
>How can I see (in ORACLE) if the field is >, >=, <. <> ?
>
>This is the SQL SERVER instruction:
>

>select fieldx = Case
>    when p.IncIcms = 0 then 0 	
>    when p.IncIcms <> 0 and t.UsoMens = 'A' then 200
>    when p.IncIcms <> 0 and t.UsoMens <> 'A' and AliqICMS = 0 then ?Estados.AliqIcms
>    when p.IncIcms <> 0 and t.UsoMens <> 'A' and AliqICMS <> 0 then AliqICMS
>end
>from ...
>

>
>Thanks