Return matched rows for an entered parameter value in an outer join

You can use this:

( {?parameter} = 'ALL' Or {TABLE.FIELDNAME} in {?parameter} )

If your field is a numeric field the just use 0 or a number that won't be in the field for the all records option.

( {?parameter} = 0 Or {TABLE.FIELDNAME} in {?parameter} )

Or in your case the %.

( {@Value} = '%'  Or {TABLE.FIELDNAME} = {@VALUE} )

Just remember to put the parenthesis () when you use the OR expression.  

Sorry, just a note: my example is for directly in the select criteria in a Crystal report.  There is a little modification to convert it to a Query format, but the basics should be the same.  

I can test it out and give you the exact format if you need it.

What kind of parameter are you using?

Does the query work in Oracle?

mlmcc

I am trying to get it to work in ORACLE.  I am able to filter in Crystal but would like to filter it in ORACLE.  In ORACLE is where it is returning all rows, even though a specific value is entered in the value.  I would like to get a response from an ORACLE expert.

the last line of it will look like as given below :

 and nvl(mtl_p.mtl_program_id,'%') LIKE  decode(parameter_value,'ALL','%',parameter_value )

the parameter_value is a plsql variable. not sure whether you can use that in your crystal report query.

Does & work like sql*plus in your work which can prompt for user value entered and take it accordingly or & cannot be used in your query.. if & can work, then we can also try :

 and nvl(mtl_p.mtl_program_id,'%') LIKE  decode(&&param,'ALL','%',&&param )

Thanks

I pasted the example that you gave me but it brings back the matching rows and the rows that have a null mtl_program_id. Is it because of the left outer join?

ok.. so that is working. which one did you use ? && or plsql input variable ?

yes, i can think that could be due to left outer joins. Just take the query and run in toad / sqlplus to understand for a given sample values to see whether that query is getting nulls there.

if we get nulls there, then we consider that as % because we have used NVL(..) right.

does it get nulls there when you give a parameter value say 13 or when you give the parameter value as ALL ??

For example when I enter 13,  it returns the records with 13 and also nulls. It behaves as if I am always entering %.  I am running the SQL in Toad and inputting the program_id.

it is due to left outer join. i have already told you on how you can fix it. i will not be able to help to exactly fit it because i do not have your tables/data.

ok..give me some more information... what column is coming as null in your output because i see that column "mtl_p.mtl_program_id" is not there in your select list at all...

thanks

Sorry,  when I sent the select statement I deleted some columns out of the query and the mtl_program_id was one of them.  Forgive my ignorance, but I used your recommendation:  and nvl(mtl_p.mtl_program_id,'%') LIKE  decode(&&param,'ALL','%',&&param ).  AS I mentioned, it does return the matched row when I enter a value  but  it also returns those that have no value.  Maybe I missed something in your recommended fix.

Can you give me your correct sql ( comletely ) ? i will then modify it to get those null records eliminated.

select *
from
( whatever is your correct query ) x
where x.mtl_program_id is not null;

This is just another way to get rid of your issue as i do not have your data model/designs to fix the actual left outer join issue.

Thanks,

I have attached the query.  
Using your second recommendation will return the expected results.


query2.txt