Want to sort the records based on non-base table item

Question

I have a multi-record block and I am trying to sort the data based on nbt item
I have a table called X which has x_type,x_code fields.
The table on which the block is created is Y. the table Y has x_type and y_desc as its fields
form layout is like below .the x_type is key field on which I have to query the records
and x_code is a non-base item in the form.I want to sort the records by X_code.
x_code y_desc
A     xyz
c par
B     lmn
my pre-query has this code
select x_type from y
where
x_type := x_type;
post-query has this code
select x_code from x
where x_type = :x_type;     
It works fine in Enter-Queryand execute query mode. but when I am sorting the records on
nbt item x_code by SET-BLOCK-PROPERTY it doesn't do any thing

Answer 1

Hi Tony ,
I have created a function and in Pre-Query & have add this
SET_BLOCK_PROPERTY('b1', ORDER_BY, 'fn_get_code(x_type)');
and the function created is as below
Function fn_get_code (p_x_type in varchar2) return varchar2 is
v_code varchar2(40);
begin
select x_code into v_code
from X, Y
where X.x_type = Y.x_type
and y.x_type = p_x_type
return v_code;
end;
when I run the form and execute query it comes up with the error message
FRM-40505 and when I pressed display error it shows
SQL Statement error:
SELECT ROWID,X_TYPE,X_CODE
FROM Y order by fn_get_code(x_type)
Error:
"ORA-00904: "FN_GET_code": invalid identifier"
Is it that I need to create a function on the database?. As I have created function
in program unit section