Cannot insert function in select statement in oracle forms record group query

Hi,

I have created a packadge. Its specification:
"
PACKAGE GET_O_NUMBER
  IS
 
FUNCTION F_O_NUMBER
  ( kodas IN number,
    numeris IN  varchar2 )
  RETURN  varchar2;
 
  PRAGMA RESTRICT_REFERENCES(F_O_NUMBER, WNDS, RNDS,TRUST);
 
END;
"

But when i add it in select in forms record group query i get an error :
'' Unhandled error in icrg 102"

In record group query i write :
SELECT ORVIS.GET_O_NUMBER.F_O_NUMBER(past.kodas, pat_numeris) from ..........

ORVIS is my username. I use oracle forms 5.0.6.8.0 on database 9i

What could cause this error?
Thanks for any help
sky_ltAsked:
Who is Participating?
 
ishandoConnect With a Mentor Commented:
Your function doesn' t have a return type of varchar2(20), but a return type of varchar2.

The size of the returned value is determined by the size of the field that the function is to populate (if you are using it in PL/SQL script)
When returning it to a select statement, there is no pre-determined size so it will allow for the maximum size (4000) to cater for all possibilities.

If you are returning this value to be displayed in a Forms field you should probably give is an alias (as Henka suggested) which is the same as the Forms field name to populate. As the function picks up the field size from the calling environment it should see that you only want a varchar2(20) returned. It should work the same as using a 'column' statement in sqlplus. However, its a long while since I used Forms so I can't say for certain what the behaviour will be.
0
 
Helena Markováprogrammer-analystCommented:
Maybe the problem is caused by package body. Did you try it like this:
SELECT kodas,pat_numeris,GET_O_NUMBER.F_O_NUMBER(kodas, pat_numeris) from ... ?
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sky_ltAuthor Commented:

yes i tried but it outpust:
"FRM-12001 Cannot create record group"

The packedge is ok as it works in sql navigator.
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sky_ltAuthor Commented:
my select in record group is :

SELECT
past.kodas,
pat.pat_numeris,
GET_O_NUMBER.F_O_NUMBER(past.kodas, pat.pat_numeris)

from
patalpos pat,
pastatai past

where
pat.id = past.id
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Helena Markováprogrammer-analystCommented:
You can try this, if it cannot help, then I don't know what  is the problem:

SELECT
pastatai.kodas KODAS,
patalpos.pat_numeris PAT_NUMERIS,
GET_O_NUMBER.F_O_NUMBER(pastatai.kodas, patalpos.pat_numeris) G_O_N
from
patalpos patalpos,pastatai pastatai
where patalpos.id = pastatai.id
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sky_ltAuthor Commented:
Thanks henka for help!

well i think i found the reason but i do not know how to solve it:

My function F_O_NUMBER returns varchar2(20) but when i put it in a select statement
the column in which it returns the values becomes  of varchar2(4000) datatype.
I created view using that function and saw that the column which is made by the function
became of varchar2(4000) datatype. That is why i can not create the record group.
What could be the reason of it?
How i could make the datatype of varchar2(20) as defined in funcion?
0
 
sky_ltAuthor Commented:
I do not know why the column becomes of varchar2(4000) but i used
substr and solved this problem. Thanks for yor help.
Do you have any ideas about how the function of return type varchar2(20) returns varchar2(4000) ?
Thanks


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Helena Markováprogrammer-analystCommented:
This is an addition to ishando's comment:

Query record group
      A query record group is a record group that has an associated SELECT statement.  The columns in a query record group derive their default names, data types, and lengths from the database columns referenced in the SELECT statement.  The records in a query record group are the rows retrieved by the query associated with that record group.Query record groups can be created and modified at design time or at runtime.

So if it is a function I think that if you use substr() in it the problem is gone.
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