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dynamic statement in where clause???

DeclanBMar 3 2010 — edited Mar 3 2010
Hi all,

I am writing a procedure and the query will be different based on the input parameters.

I'm wondering how I can do this inside the where clause? simplified example

select *
from tableA a, tableB b
where a.id = b.id
/* if input parameter = 'abc' then */
and a.total = b.total
/* if input parameter = 'xyz' then */
and a.total != b.total

I was thinking case statement but from what i read it cannot be used in this situation

Thanks
This post has been answered by 728534 on Mar 3 2010
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Comments

L. Fernigrini

Consider using PL/Scope

PL/Scope Enhancements in Oracle Database 12c Release 2 (12.2) (0 Bytes)It is simpler than parsing code.

User_RI4C6

How its work I admit that I am a beginner in the world of plsql and I told myself that it is possible to do it with regexp

User_H3J7U

it can be for example standard package, ULT_HTTP
UTL_HTTP Constants

L. Fernigrini

undefined (0 Bytes)You need to set some session settings like this:

ALTER SESSION SET PLSCOPE_SETTINGS='IDENTIFIERS:ALL, STATEMENTS:ALL';

Then compile the package, and then query the dictionary tables being populated when you compile PL/SQL and have set PLSCOPE settings.
In the article I mentioned there is an example :
image.pnghere you would see that variable L_NUM and L_STR are declared on lunes 6 and 7, and that they reference the NUMBER and CHARACTER datatypes. You can modify the query in the example to filter only "VARIABLE" as TYPE; "DECLARATION" as USAGE and then get the associated REFERENCE row to get the datatype.

1 person found this helpful
L. Fernigrini

Poster mentioned ANY package, documentation exists only for Oracle provided packages.

User_RI4C6

Wow very cool, Thank you very much for the help.!

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Locked on Mar 31 2010
Added on Mar 3 2010
#pl, #procedure, #sql
5 comments
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