Growing query size while appending last query.

Question

Hi!
I've got few blocks on my ORACLE FORMS form. Blocks A and B are connected by the master-detail relation. I've got table of records from B and above the table I've got buttons which sort this table. It's done by setting order by clause and then calling EXECUTE_QUERY.
Before I call execute_query I want to rewrite last_query not to lose previously set filters. I know that last_query contains default_where so not to have it repeated many times in a query I replace default_query with last_query before execute_query and revert after it.
My case is like this:
     Block SPRAWY with item ID is master for block SPAWY_TYT with item ID_WNIOSKI.
     On block SPRAWY_TYT I've got 'default where' set to ID_WNIOSKI = :SPRAWY.ID.
     When I call my sort procedure (click button) I'm getting last_query's (from block SPRAWY_TYT) where clause like: "ID_WNIOSKI='9' AND (ID_WNIOSKI='9')".
     After next click last_query looks like: "ID_WNIOSKI='9' AND (ID_WNIOSKI='9') AND (ID_WNIOSKI='9')" and it's growing with each click.
Final question:
     Where this part "(ID_WNIOSKI='9')" comes from and how can I remove it from last_query (I mean universal solution not depending on particular item or relatioin name)?
Regards,
Artur

Answer 1

Hi, Amrit,
Do you just want 9 copies of the selected rows from mth_dim_hierarchy, each with all the columns the same except for level_num?
If so, cross-join mth_dim_hierarchy with a Counter Table , that is, any table (or, as in this case, result set) with 9 rows. For example:
WITH     cntr     AS
     SELECT     LEVEL     AS n
     FROM     dual
     CONNECT BY     LEVEL     <= 9
SELECT      c.n                         AS LEVEL_NUM
,     To_Date ('01-JAN-1900','DD-MON-YYYY')      AS EFFECTIVE_DATE
,     -99999                          AS LEVEL_KEY
,     'Unassigned'                     AS LEVEL_NAME
,     -99999                          AS PARENT_KEY
,     'Unassigned'                     AS PARENT_NAME
,     MDH.HIERARCHY_ID
FROM           MTH_DIM_HIERARCHY      MDH
CROSS JOIN     cntr               c
WHERE      MDH.CREATION_DATE      >= v_log_from_date
AND     MDH.DIMENSION_NAME      = 'EQUIPMENT' 
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all the tables involved, and the results you want from that data.
In the case of a DML operation (such as MERGE) the sample data should show what the tables are like before the DML, and the results will be the contents of the changed table(s) after the DML.
Explain, using specific examples, how you get those results from that data.
Simplify the prole, if possible. If you can show what you need to do with 3 distinct values of level_num, don't post a problem with 9 distinct values.
Always say what version of Oracle you're using.