Order_by in set_block_property returns ORA-01785

Question

Hello.
We have a problem with using function in set_block_property with order by when using union sentence.
Our code looks like:
set_block_property('block', default_where, 'id = '||:item||'
UNION ALL
SELECT ROWID,column1,column2,column3,... FROM table WHERE
id = '||:item);
set_block_property('block', order_by, 'function(column1), column2');
Form returns error: ORA -01785 : ORDER BY item must be the number of a SELECT-list expression
We know, that with union we should use numbers in order by instead of column names. But it doesn't work.
If we do not use UNION, then order_by with function works.
How can we solve this problem?
Thanks.
Edited by: DejanH on Sep 10, 2008 8:03 AM

Answer 1

Not sure you can ever get Forms to handle that complicated a query using default block processing.
Since it looks like your block is display-only, I would create a record group with the query and order by, populate it, and then step through the record group row-by-row moving the values to the block (which would then be a control-block rather than a base-table block). Of course, if your query selects more than a few hundred rows, this is not a good solution.