Populating item with pl/sql function body

Hi,
I want to populate a "Display as text (saves state)" item with the difference of 2 other items.
The source of my item is:
- Only when current...
- PL/SQL Function body
- Source expression:
DECLARE
v_diff NUMBER;
BEGIN
v_diff := :P1_AUFWAND_TOTAL - :P1_AUFWAND_BERECHNET;
return v_diff;
END;
Now I get this error:
ORA-06502: PL/SQL: numerischer oder Wertefehler: Fehler beim Konvertieren von Zeichen zu Zahl
Error ERR-1904 Unable to compute item default: type = Function Body...
I tried to track down the problem with to_number conversion:
v_diff := to_number(':P1_AUFWAND_BERECHNET'); or
v_diff := to_number(':P1_AUFWAND_BERECHNET', '999G999D00');
What's wrong here? It feels like I'm making a simple mistake...
Thanks for any help,
Roger

Hi Denes,
Thanks for your help. You were right, item :p1_aufwand_berechnet was not a number.
I created the problem myself by setting the format to:
return TO_CHAR(v_aufwand,'999G999G999G999G990D00');
Now the dilemma is that I want to calculate the numbers, but at the end I want a nice format to display them. This obviously only works with TO_CHAR, see:
Re: Number format mask of text item is not applied
Maybe this is to be solved with a seperate process after the calculation, to set the format?
Cheers,
Roger

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Message was edited by:
user536304

Your code is in a default value for an item, right?
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Message was edited by:
Bill Carlisle

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Your code is in a default value for an item, right?
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Message was edited by:
Bill Carlisle

Sql query(PL/SQL function body return SQL query) with in(x,y,z) condition

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DECLARE
v_sql VARCHAR2(32767);
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SELECT count(*) "cnts",
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s VARCHAR2(20);
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s VARCHAR2(20);
q varchar2(32767);
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RETURN q;
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Hope this helps...
Anton

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=======================
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=====================
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====================
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http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14200/conditions007.htm
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How to use a select list value in a PL/SQL function body returning SQLquery

Hi Friends,
I have a select list P6_TEST with values 'nav' anf 'jyo'. I am trying to create a report using "SQL Query (PL/SQL
function body returning SQL query)". In my report query can i check if P6_TEST='nav' and do something like the
code shown below.How can i do that.
DECLARE
v_sql VARCHAR2(3000);
BEGIN
IF :P6_TEST = 'nav' THEN
v_sql :=
'SELECT
* from department';
........................Thanks,
Nav

Nav:
What you have should work. Give it a go. Post back if you run into issues.
Varad

Region source (PL/SQL function body returning SQL query)

Hi, guys.
Here is what i try to do:
Create a region of type SQL Query (PL/SQL function body returning SQL query). In the source area i tried to put this:
DECLARE
v_new VARCHAR2(10);
v_SQL varchar2(32000);
BEGIN
v_new := :P102_HDN_NEW;
-- htp.p(v_new);
IF v_new = 'N-Set' THEN
v_SQL := 'select ' ||
ELSIF v_new = 'Y-Set' THEN
v_SQL := 'select ' ||
END IF;
RETURN v_SQL;
END;
And here is the reply from APEX:
1 error has occurred
Query cannot be parsed within the Builder. If you believe your query is syntactically correct, check the ''generic columns'' checkbox below the region source to proceed without parsing. The query can not be parsed, the cursor is not yet open or a function returning a SQL query returned without a value.
Now.
1. Variable is set with the right value.
2. Each statement (separately) returns SQL that works with no problems
3. Problem occures if i try to put IF statement around the SQL creation.
4. If i select "Use Generic Column Names (parse query at runtime only)" instead of "Use Query-Specific Column Names and Validate Query" then the script returns SQL properly, however report's column names are set to Col1, Col2,Col3 ......
Thnks in advence
Mike

OK. Here is enire statement:
DECLARE
v_new VARCHAR2(10);
v_SQL varchar2(32000);
BEGIN
v_new := :P102_HDN_NEW;
htp.p(v_new);
IF v_new = 'N-Set' THEN
v_SQL := 'select ' ||
'APEX_ITEM.DISPLAY_AND_SAVE(10,c.sdescr) descr, ' ||
'APEX_ITEM.DISPLAY_AND_SAVE(12,DECODE(ld.level,''All'', ''All Categories'',ld.level)) level, ' ||
'apex_item.checkbox(1, ld.opt_in_auto_flag, decode(ld.opt_in_auto_flag,NULL,''disabled'',''Y'',''checked'')) auto_in, ' ||
'apex_item.checkbox(2, ld.opt_in_manual_flag, decode(ld.opt_in_manual_flag,NULL,''disabled'',''Y'',''checked'')) manual_in, ' ||
'apex_item.checkbox(3, ld.opt_out_auto_flag, decode(ld.opt_out_auto_flag,NULL,''disabled'',''Y'',''checked'')) auto_out, ' ||
'apex_item.checkbox(4, ld.opt_out_manual_flag, decode(ld.opt_out_manual_flag,NULL,''disabled'',''Y'',''checked'')) manual_out, ' ||
'DECODE(c.code, ''NMBR'', NULL,''Change to '' || DECODE(ld.level,''All'',''Categories'',''All Categories'')) link_change, ' ||
'APEX_ITEM.DISPLAY_AND_SAVE(11,c.code) code ' ||
'from ' ||
'tbl1 c, ' ||
'tbl2 ld ' ||
'where c.code = ld.code ' ||
'and c.type = ''TYPE1'' ' ||
'and c.active = ''Y'' ' ||
'order by c.sorting ';
ELSIF v_new = 'Y-Set' THEN
v_SQL := 'select ' ||
'APEX_ITEM.DISPLAY_AND_SAVE(10,c.sdescr) descr, ' ||
'APEX_ITEM.DISPLAY_AND_SAVE(12,''All Categories'') level, ' ||
'apex_item.checkbox(1, c.option_1, decode(c.option_1,NULL,''disabled'',''Y'',''checked'')) auto_in, ' ||
'apex_item.checkbox(2, c.option_3, decode(c.option_3,NULL,''disabled'',''Y'',''checked'')) manual_in, ' ||
'apex_item.checkbox(3, c.option_2, decode(c.option_2,NULL,''disabled'',''Y'',''checked'')) auto_out, ' ||
'apex_item.checkbox(4, c.option_4, decode(c.option_4,NULL,''disabled'',''Y'',''checked'')) manual_out, ' ||
'DECODE(c.code, ''AAA'', NULL,''Options by AAA'') link_change, ' ||
'APEX_ITEM.DISPLAY_AND_SAVE(11,c.code) code ' ||
'from ' ||
'tbl1 c ' ||
'where 1 = 1 ' ||
'and c.type = ''TYPE1'' ' ||
'and c.active = ''Y'' ' ||
'order by c.sorting ';
END IF;
RETURN v_SQL;
END;
If i put just this
DECLARE
v_new VARCHAR2(10);
v_SQL varchar2(32000);
BEGIN
v_new := :P102_HDN_NEW;
htp.p(v_new);
v_SQL := 'select ' ||
'APEX_ITEM.DISPLAY_AND_SAVE(10,c.sdescr) descr, ' ||
'APEX_ITEM.DISPLAY_AND_SAVE(12,DECODE(ld.level,''All'', ''All Categories'',ld.level)) level, ' ||
'apex_item.checkbox(1, ld.opt_in_auto_flag, decode(ld.opt_in_auto_flag,NULL,''disabled'',''Y'',''checked'')) auto_in, ' ||
'apex_item.checkbox(2, ld.opt_in_manual_flag, decode(ld.opt_in_manual_flag,NULL,''disabled'',''Y'',''checked'')) manual_in, ' ||
'apex_item.checkbox(3, ld.opt_out_auto_flag, decode(ld.opt_out_auto_flag,NULL,''disabled'',''Y'',''checked'')) auto_out, ' ||
'apex_item.checkbox(4, ld.opt_out_manual_flag, decode(ld.opt_out_manual_flag,NULL,''disabled'',''Y'',''checked'')) manual_out, ' ||
'DECODE(c.code, ''NMBR'', NULL,''Change to '' || DECODE(ld.level,''All'',''Categories'',''All Categories'')) link_change, ' ||
'APEX_ITEM.DISPLAY_AND_SAVE(11,c.code) code ' ||
'from ' ||
'tbl1 c, ' ||
'tbl2 ld ' ||
'where c.code = ld.code ' ||
'and c.type = ''TYPE1'' ' ||
'and c.active = ''Y'' ' ||
'order by c.sorting ';
RETURN v_SQL;
END;
it works fune...

SQL query (pl/sql function body returning query) performance issue

I create my report in building my sql instruction with ( SQL Query pl/sql function body returning sql query );
My report take more than 20 seconds however if i did a cut and paste with the sql code in TOAD the same sql take 1 second.
To try to discover the source of the problem; i take the sql generated by the function and i create another report ( sql query ) this new report take 2 seconds.
My query is very big 25,000 characters with database link.
What is the difference between SQL-quey and sql-query(pl/sql function body returning sql query)
Thanks
Marc

Marc,
Firstly...don't compare the timings from Toad, since often Toad only fetches the first few records for you (i.e. it pages them).
Secondly....the database link could be a factor here, but without seeing your query it's too hard to say.
Can you post the query somewhere (on a webserver say)?

Populating item with pl/sql function body

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