Report displayed based on Select List condition

Question

Hello,
Any help would be appreciated.
I have a report and a select list, P55_MISSING. The select list contains the column names in the table that the report displays.
If I select one of the column names, I would like to display all records where that column name is null.
The sql I have at the moment is:
select
"ID",
"APPLICATION",
"SHORT_DESCRIPTION",
"DESCRIPTION",
"OPC_NET_NAMES",
"PROCESSING_SCHEDULE",
"PROCESSING_REGULARITY",
"PLATFORMS_INVOLVED",
"UNIX_DIRECTORIES",
"SOURCE_FILES",
from "APP_METADATA"
where :P55_MISSING IS NULL
If I select 'source files' for example, I would expect to see 3 out of 4 records stored in the table. However, I receive the message 'no data found'.
Any help would be great. Thank you.

Answer 1

Hi
In order to doe this you will have to use dynamic sql (so you have to change your report type to 'SQL Query (PL/SQL Function Body Returning SQL Query)').
It would then look something like this...
DECLARE
l_sql VARCHAR2(32767);
BEGIN
l_sql := 'SELECT id,
                 application,
                 short_description,
                 description,
                 opc_net_names,
                 processing_schedule,
                 processing_regularity,
                 platforms_involved,
                 unix_directories,
                 source_file
          FROM   app_metadata
          WHERE ';
l_sql := l_sql||:P55_MISSING||' IS NULL';
RETURN l_sql;
END;Sorry, I can't test this as I don't have your tables.
Cheers
Ben