Returning a set of registers in a PL/SQL function

Does anybody knows if there is some way to return a set of registers (like a cursor) in a PL/SQL function without using a temporary table?
Thank you

To: [email protected]
Sub: Returning a set of registers in a PL/SQL function
Hi: Nei S
Create a Package first:
CREATE OR REPLACE PACKAGE sp_xxxPKG AS
TYPE RT1 IS RECORD (
sp_col1 emp.emp_no%TYPE,
sp_col2 emp.emp_name%TYPE);
TYPE RCT1 IS REF CURSOR RETURN RT1;
END;
Then Create a Procedure:
CREATE OR REPLACE PROCEDURE sp_xxx (
RC1 IN OUT sp_xxxPKG.RCT1) AS
BEGIN
OPEN RC1 FOR
SELECT emp_no, emp_name FROM emp;
RETURN;
END;
null

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PL/SQL Function to convert fields & set max length

I am having a problem with the following assignment:
Write a stored PL-SQL function called namefct that will convert two varchar2 fields (first and last names) into the format: lastname, firstname with a maximum length of 10 chars. If the combined size of the two names is greater than 10 characters, you will issue an error message indicating the name has been shortened to 10 characters and return only the first ten characters, otherwise return the entire name. Test the namefct function by using the staff table created in Part 1 (above). Turn in: the SQL statements to build the function, execute the sample code and the resulting output.
This is the start of my attempt, excluding the error message that is to be issued:
CREATE OR REPLACE FUNCTION namefct (fname VARCHAR2, lname VARCHAR2) IS
BEGIN
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Any advice or assistance would be greatly appreciated, since my Professor seems unwilling to assist me. Thanks!

Write a stored PL-SQL function called namefct that
will convert two varchar2 fields (first and last
names) into the format: lastname, firstname with a
maximum length of 10 chars. If the combined size of
the two names is greater than 10 characters, you will
issue an error message indicating the name has been
shortened to 10 characters and return only the first
ten characters, otherwise return the entire name.
Test the namefct function by using the staff table
created in Part 1 (above). Turn in: the SQL
statements to build the function, execute the sample
code and the resulting output.Firstly you need to consider what you have already been taught as you need to ensure that you code your function according to the purpose of the assignment. i.e. are you supposed to be demonstrating the use of returning values in a function or are you supposed to be demonstrating the use of exception handling etc.
The main tricky bit with this assignment is the requirement to show an error message and still return a value. If you were to just raise an exception with the error message (e.g. raise application error) then you won't be able to actually return a value. Because it's a function and not a procedure that has been specified you aren't returning the value in an OUT parameter which would have made passing the value back and raising an exception easier.
So, the only real way to have a function and allow it to show an error message would be something like...
SQL> ed
Wrote file afiedt.buf
1 CREATE OR REPLACE FUNCTION f_name(p_forename IN VARCHAR2, p_surname IN VARCHAR2) RETURN VARCHAR2 IS
2    name_too_long EXCEPTION;
3 BEGIN
4    IF LENGTH(p_surname||', '||p_forename) > 10 THEN
5      RAISE name_too_long;
6    END IF;
7    RETURN p_surname||', '||p_forename;
8 EXCEPTION
9    WHEN name_too_long THEN
10      DBMS_OUTPUT.PUT_LINE('Name Too Long. Truncating to 10 chrs.');
11      RETURN SUBSTR(p_surname||', '||p_forename, 1, 10);
12* END;
SQL> /
Function created.
SQL> select f_name('FRED','SIMS') from dual;
F_NAME('FRED','SIMS')
SIMS, FRED
SQL> select f_name('FRED','SIMKINSON') from dual;
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SIMKINSON,
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hi,
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What do you mean "return a set of all items"? You mean all the entries of this type in the DB? Then run query "select * from whatever_that_table_is", iterate over the result set, and and one object to a List for each row. Of course, this is not generally a good approach, as it's quite possible for the number of rows in the DB to exceed what you can hold in memory at one time.
What part are you having trouble with?

How to return a set of vlaues.

Hello All,
I need to return a set of vlaues from a table.The values will be used by other application.
For example I need all the department names to be retuned . How can we do this. can we return more than one value in a function.
Please let me know the syntax for this.
Kind Regards,
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I will show you two ways.
1. Using a Table type.
SQL> create or replace type my_dname_type as table of varchar2(14)
2 /
Type created.
SQL> create or replace function my_dname_fn return my_dname_type
2 as
3     ldname my_dname_type;
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8 /
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2 /
COLUMN_VALUE
ACCOUNTING
RESEARCH
SALES
OPERATIONS2. using a ref cursor
SQL> drop type my_dname_type
2 /
Type dropped.
SQL> drop function my_dname_fn
2 /
Function dropped.
SQL> create or replace function my_dname_fn return sys_refcursor
2 as
3     ldname sys_refcursor;
4 begin
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6     return ldname;
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8 /
Function created.
SQL> var ldname refcursor
SQL> exec :ldname := my_dname_fn;
PL/SQL procedure successfully completed.
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Good day all,
Many times I have used the CASE construct to return a value based on a set of conditions but now I have a need to return a set of columns based on a set of condition.
Look at this
A
=====
id
name
account
zip_code
status
B
=====
id
name
account
zip_code
C
=======
id
name
account
zip_code
D
======
id
name
account
zip_code
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Hi,
Is this what youa re looking for?
As Frank has said not sure what is the relationship between your tables and what Output you expect.
Sample Data used.Avoid using reserved words for column like ID and NAME
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create table b (id1 varchar2(10),name1 varchar2(10),account1 varchar2(10),zip_code varchar2(10))
create table c (id1 varchar2(10),name1 varchar2(10),account1 varchar2(10),zip_code varchar2(10))
create table d (id1 varchar2(50),name1 varchar2(50),account1 varchar2(50),zip_code varchar2(50))
insert into A values (0, 'michael', '000000', '213401', 'A');
insert into A values (1, 'johnson', '63423', '093401', 'B');
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insert into B values (1, 'brother', '1129812', '093083');
insert into B values (2, 'stuggard', '0093732', '087366');
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insert into D values (3, 'Grannies', '237643', '864433');
Query
select
case when a.status='A' then
a.id1
when a.status='B' then
b.id1
when a.status='C' then
c.id1
when a.status='D' then
d.id1
end ID1,
case when a.status='A' then
a.name1
when a.status='B' then
b.name1
when a.status='C' then
c.name1
when a.status='D' then
d.name1
end ID1
,case when a.status='A' then
a.account1
when a.status='B' then
b.account1
when a.status='C' then
c.account1
when a.status='D' then
d.account1
end account1,
a.status status,
case when a.status='A' then
a.zip_code
when a.status='B' then
b.zip_code
when a.status='C' then
c.zip_code
when a.status='D' then
d.zip_code
end zip_code
from a ,b,c,d
where a.id1=b.id1 and b.id1=c.id1 and c.id1=d.id1Cheers!!!
Bhushan

Returning result sets from PL/SQL procedure to client app.

I was wondering if its possible in Oracle PL/SQL to DECLARE, OPEN a cursor and exit
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: my
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I
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: functions?
: : : Any help or hint wourl be be gladly appreciate it.
: : : Enrique
: : : Thank you.
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[svn:fx-trunk] 11655: Added logic to allow getStyle to return locally set style values early on (before the instance has been added to DOM).

Revision: 11655
Author:   [email protected]
Date:     2009-11-11 08:27:42 -0800 (Wed, 11 Nov 2009)
Log Message:
Added logic to allow getStyle to return locally set style values early on (before the instance has been added to DOM).
QE notes: None
Doc notes: None
Bugs: SDK-22198
Reviewer: Glenn
Tests run: Checkin
Is noteworthy for integration: No
Ticket Links:
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Modified Paths:
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PL/SQL function body returning SQL query - ORA-06502: PL/SQL: numeric or value error

I'm attempting to dynamically generate a rather large SQL query via the "PL/SQL function body returning SQL query" report region option. The SQL query generated will possibly be over 32K. When I execute my page, I sometimes receive the "ORA-06502: PL/SQL: numeric or value error" which points to a larger than 32K query that was generated. I've seen other posts in the forum related to this dynamic SQL size limitation issue, but they are older (pre-2010) and point to the 32K limit of the DNS (EXECUTE IMMEDIATE) and DBMS_SQL. I found this post (dynamic sql enhancements in 11g) which discusses 11g no longer having the 32K size limitation for generating dynamic SQL. Our environment is on 11gR2 and using ApEx 4.2.1. I do not know which dynamic SQL method -- DNS or DBMS_SQL -- ApEx 4.2.1 is using. Can someone clarify for me which dynamic SQL method ApEx uses to implement the "PL/SQL function body returning SQL query" option?
As a test, I created a page on apex.oracle.com with a report region with the following source:
declare
l_stub varchar2(25) := 'select * from sys.dual ';
l_sql clob := l_stub || 'union all ';
br     number(3) := 33;
begin
while length ( l_sql ) < 34000 loop
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end loop;
l_sql := l_sql || l_stub;
for i in 1 .. ceil ( length ( l_sql ) / br ) loop
    dbms_output.put_line ( dbms_lob.substr ( l_sql, br, ( ( i - 1 ) * br ) + 1 ) );
end loop;
return l_sql;
end;
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I can certainly implement a work-around for my issue by creating a 'Before Header' process on the page which populates an ApEx collection with the data I am returning and then the report can simply select from the collection, but according to documentation, the above 32K limitation should be resolved in 11g. Thoughts?
Shane.

What setting do you use in your report properties - especially in Type and in Region Source?
If you have Type="SQL Query", then you should have a SELECT statement in the Region Source. Something like: SELECT .... FROM ... WHERE
According to the ERR-1101 error message, you have probably set Type to "SQL Query (PL/SQL function body returning SQL query)". In this situation APEX expects you to write a body of a PL/SQL function, that will generate the text of a SQL query that APEX should run. So it can be something like:
declare
mycond varchar2(4000);
begin
if :P1_REPORT_SEARCH is not null THEN
mycond:='WHERE LAST_NAME like :P1_REPORT_SEARCH ||''%''';
end if;
return 'select EMPLOYEE_ID, FIRST_NAME, LAST_NAME from EMPLOYEES ' ||mycond;
end;
And for escaping - are you interested in escaping the LIKE wildcards, or the quotes?
For escaping the wildcards in LIKE function so that when the user enters % you will find a record with % and not all functions, look into the SQL Reference:
http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14200/conditions007.htm
(You would than need to change the code of your function accordingly).
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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...

Issue with running PL/SQL function returning Sql query

hi, I am trying to create a report region by using the option of PL/SQL function returning sql query.
I notice that it's very slow for the report region page to show up. In my PL/SQL function body, there are only 3 steps, first update all the 10 rows of varchar2 fields to null,then insert values to those fields, then select all from the table to show report results. It takes more than 5 minitues for the page to load up, how ever, if i run those steps in SQL*Plus, it only takes a couple of seconds to finish. Any suggestions?
Thanks,
gina

Sergio, the codes are as followed,
Declare
q varchar2(32767); -- query
Begin
q := 'select "ID",'||
'"ENTRY NAME","TOTAL","#CM","%CM","#CA",'||
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update info_table
set "TOTAL" = '',
"#CM" = '',
"%CM" = '',
"#CA" ='',
"%CA"=''
where "ID"<=10;
// set all data in column Total to null,there is only 10 rows in the table
update info_Table set Total = vTotal,
"#CM" = vCM
(those variables hold user key-in Text filed value)
where ID = 1;
return q;
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<b>
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selected_items HTMLDB_APPLICATION_GLOBAL.VC_ARR2;
s VARCHAR2(20);
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'sum(orig_extrl) orig_extrl, '||
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'sum(recv_extrl) recv_extrl '||
'FROM line_usage_sum_view '||
'WHERE TO_CHAR(orig_geo_loc_sys) LIKE ''' || s ||'%'' '||
--'WHERE TO_CHAR(orig_geo_loc_sys) LIKE ''2213003%'' '||
'AND switch_id = ''' || :P1_SWITCH_ID || ''' ' ||
'AND call_start_date > TO_DATE(''30-NOV-1999'') ' ||
'AND call_clear_time > TO_DATE(''30-NOV-1999'') '||
'AND '||
:SORTFIELD||' BETWEEN '||
'TO_DATE(:STARTDATE,''dd-MON-YYYY HH24:MI'') AND '||
'TO_DATE(:STOPDATE, ''dd-MON-YYYY HH24:MI'') '||
'GROUP BY GROUPING SETS (orig_geo_loc_sys)';
-- htp.p('SQL query: '||q);
RETURN q;
END LOOP;
END;</b>
Thank you,
Laura

Laura,
First, I would be careful of introducing SQL Injection possibilities. Any time I see
'Select ... ' || :P123_FOO || ' ... '
I worry about sql injection. In your case you are converting :P50_SELECTED_INSTRUMENTS into selected_items and then selected_items into s. So when I see
'WHERE TO_CHAR(orig_geo_loc_sys) LIKE ''' || s ||'%'' '||
I think, "I could use sql Injection and hack this."
So, I would do some validation on :P50_SELECTED_INSTRUMENTS or some other method to avoid this.
I'm not certain I understand your query. Do you really intend to allow the user to select the beginning of a string and then find all rows that start with that string? Or, do you just want to let them find when it matches the string. This is one way if you want to do matching:
DECLARE
selected_items HTMLDB_APPLICATION_GLOBAL.VC_ARR2;
s VARCHAR2(32767);
q varchar2(32767);
BEGIN
-- Change the : separate string to be comma separated with quoted strings
s := '''' || replace(:P50_SELECTED_INSTRUMENTS, ',', ''',''')|| '''' ;
-- htp.p('COUNT: '||selected_items.count);
q:= 'SELECT '||
'SUBSTR(orig_geo_loc_sys,1,INSTR(orig_geo_loc_sys,''-'')-1) AS INSTRUMENT, '||
'SUBSTR(orig_geo_loc_sys,INSTR(orig_geo_loc_sys,''-'')+1, LENGTH'||
' (orig_geo_loc_sys)) AS ORIG_LINENUM, '||
'sum(orig_intrl) orig_intrl, '||
'sum(orig_extrl) orig_extrl, '||
'sum(recv_intrl) recv_intrl, '||
'sum(recv_extrl) recv_extrl '||
'FROM line_usage_sum_view '||
'WHERE TO_CHAR(orig_geo_loc_sys) in (' || s ||' ) '||
--'WHERE TO_CHAR(orig_geo_loc_sys) LIKE ''2213003%'' '||
'AND switch_id = ''' || :P1_SWITCH_ID || ''' ' ||
'AND call_start_date > TO_DATE(''30-NOV-1999'') ' ||
'AND call_clear_time > TO_DATE(''30-NOV-1999'') '||
'AND '||
:SORTFIELD||' BETWEEN '||
'TO_DATE(:STARTDATE,''dd-MON-YYYY HH24:MI'') AND '||
'TO_DATE(:STOPDATE, ''dd-MON-YYYY HH24:MI'') '||
'GROUP BY GROUPING SETS (orig_geo_loc_sys)';
-- htp.p('SQL query: '||q);
RETURN q;
END;
If you want to do something more like you originally stated, try this:
DECLARE
selected_items HTMLDB_APPLICATION_GLOBAL.VC_ARR2;
s VARCHAR2(20);
q varchar2(32767);
BEGIN
selected_items := HTMLDB_UTIL.STRING_TO_TABLE(:P50_SELECTED_INSTRUMENTS);
-- htp.p('COUNT: '||selected_items.count);
q:= 'SELECT '||
'SUBSTR(orig_geo_loc_sys,1,INSTR(orig_geo_loc_sys,''-'')-1) AS INSTRUMENT, '||
'SUBSTR(orig_geo_loc_sys,INSTR(orig_geo_loc_sys,''-'')+1, LENGTH'||
' (orig_geo_loc_sys)) AS ORIG_LINENUM, '||
'sum(orig_intrl) orig_intrl, '||
'sum(orig_extrl) orig_extrl, '||
'sum(recv_intrl) recv_intrl, '||
'sum(recv_extrl) recv_extrl '||
'FROM line_usage_sum_view '||
'WHERE 1=1 ';
FOR i in 1..selected_items.count LOOP
s := TO_CHAR(selected_items(i));
q := q || ' and TO_CHAR(orig_geo_loc_sys) LIKE '''|| s ||'%'' ' ;
END LOOP;
q := q || ||'%'' '||
--'WHERE TO_CHAR(orig_geo_loc_sys) LIKE ''2213003%'' '||
'AND switch_id = ''' || :P1_SWITCH_ID || ''' ' ||
'AND call_start_date > TO_DATE(''30-NOV-1999'') ' ||
'AND call_clear_time > TO_DATE(''30-NOV-1999'') '||
'AND '||
:SORTFIELD||' BETWEEN '||
'TO_DATE(:STARTDATE,''dd-MON-YYYY HH24:MI'') AND '||
'TO_DATE(:STOPDATE, ''dd-MON-YYYY HH24:MI'') '||
'GROUP BY GROUPING SETS (orig_geo_loc_sys)';
-- htp.p('SQL query: '||q);
RETURN q;
END;
Hope this helps...
Anton

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