Date Functions in Discoverer Query

Hi,
It has been a while since I logged into the forum. Sorry at present my contribution is only to get help. Hope to help others in future.
Here is teh problem I am facing.
We have frequent requirement to get the sales comparison by last year to this year
in Week to Date, Month to Date, Year to Date timeline.
To accomplish I use Custom Date functions in my Discoverer which results in query like below
SELECT o100229.curr_division_code,
SUM (DECODE (discotw_admin.fiscal_cal_by_wk.flyrweek (:fyrweek),
o100059.fiscal_year_week, o100341.tot_lines_ext_i_s_avg_cst,
0
The "discotw_admin.fiscal_cal_by_wk.flyrweek (:fyrweek)" is the function I use to get the Last year week number nased on the parameter for this week number.
But the problem with this approach is it fires the Function every time a record is read by the query which makes the query to run long time.
Is there anyway I can use a subquery that fires the function only once and use the value of the function in the main query in Discoverer.
I did tried to create a custom folder for the Date functions and use it in the query so that the query references the field on the cusom folder. But still I do not see any improvement in the performance.
Thanks in advance
Jay

Hi Jay
Yes, calculating like this on every row will have a drag on performance.
Have you considered using one of the analytic functions LAG or LEAD? They are designed for this type of reporting.
If you have considered them and rejected them can you explain why.
Another possibility is to use a SUM analytic like this:
SUM(Selling Price SUM)
OVER(PARTITION BY Size,Product
ORDER BY TO_DATE("Year",'YYYY')
RANGE BETWEEN INTERVAL '1' YEAR PRECEDING
AND INTERVAL '1' YEAR PRECEDING )
The caveat here is that RANGE INTERVAL must be a YEAR and the ORDER BY must return a date!
Does this help?
Best wishes
Michael

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My question I guess is really 2...I'm trying to use the date function as a comparison in my WHERE clause in my sql command.
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There are sql functions upper & lower.
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Question - Passing date to a function from a Query

Hello,
I have a function which looks like this
CREATE OR REPLACE FUNCTION CAL_DATES_FNC
(fp_fddate IN VARCHAR2,
fp_task IN VARCHAR2
RETURN VARCHAR2
IS
BEGIN
IF TO_CHAR(TO_DATE(fp_fddate,'YYYYMMDD'),'DD-MON-YYYY') <= TO_CHAR(ADD_MONTHS(TO_DATE(fp_fddate,'YYYYMMDD'),60),'DD-MON-YYYY')
THEN
RETURN TO_CHAR(ADD_MONTHS(TO_DATE(fp_fddate,'YYYYMMDD') +21,6 * SUBSTR(fp_task,-2)) ,'DD-MON-YYYY');
ELSIF TO_CHAR(TO_DATE(fp_fddate,'YYYYMMDD'),'DD-MON-YYYY') >= TO_CHAR(ADD_MONTHS(TO_DATE(fp_fddate,'YYYYMMDD'),72),'DD-MON-YYYY')
THEN
RETURN TO_CHAR(ADD_MONTHS(TO_DATE(fp_fddate,'YYYYMMDD') +21,12 * SUBSTR(fp_task,-2)) ,'DD-MON-YYYY');
END IF;
END;
I am using this function in a query as given below to pass a date fp_fddate
The problem I am having is that the function is executing only the first part of the IF construct it is not going into the second IF condition.
Can some one please let me know where I could be going wrong.
SELECT ABC.PT,
ABC.INV,
ABC.INVSITE,
ABC.TASK TASK_NAME,MAX(XYZ.FPDATE) fpdate ,
CAL_DATES_FNC(MAX(XYZ.FPDATE),ABC.CPTASK) "DATE1",
TO_CHAR(TO_DATE(ABC.D_YR||ABC.D_MON||ABC.D_DAY,'YYYYMMDD'),'DD-MON-YYYY') "DATE2"
FROM ABC,
XYZ
WHERE ABC.PT = XYZ.PT
AND PATSTAT.PT = '61090'
GROUP BY ABC.PT,ABC.INV,ABC.INVSITE,ABC.D_YR,ABC.D_MON,ABC.D_DAY,ABC.CPTASK
Regards
Fm

Hi,
IQ wrote:
Thanks for your messages. I am sending the scripts for the tables and insert statements in this message. Hope this will help to recreate the scenario.Don't forget to post the output you want from that data, and an explanation of how you get that output from the given data.
Some of my answers are as follows,
1) I know that the function is not in a proper syntax and thats the reason I need to fix it to be able to perform well. All I want is to compare the dates for a 5 year period(60 months) and then return something . For a period greater than 6 years (72 months) it should return something else.What dates do you want to compare? I assume fp_fddate is one of them, but what about the other(s)?
When does the 5-year period begin or end?
When does the 6-year period begin or end?
I understand the fucntion may return either of two values. Do you care what those two values are? If so, give examples.
What if the date is in neither the 5-year nor the 6-year period? (A fucntion has to return something in all cases. It can return NULL, if that's what you want.)
What if the argument can't be interpreted as a date?
2) Regarding the string datatype for date columns I cannot change the database design as this is done by another team, I can however explain them the points mentioned here.
Please find below the scripts When you say TEST_DATES, do you mean TEST_DATES1. or is there another table? Test before you post.
CREATE TABLE TEST_DATES
pt VARCHAR2(10 BYTE),
inv VARCHAR2(10 BYTE),
invsite VARCHAR2(10 BYTE),
task_name VARCHAR2(20 BYTE),
fpddate VARCHAR2(8 BYTE),
DATE1 VARCHAR2(4000 BYTE),
DATE2 VARCHAR2(17 BYTE)
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (61090,'XDUMMY1'     ,'R1111','UP01'     ,'19990714','04-FEB-2000',     '17-JAN-2000');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,     'XDUMMY1','R1111','UP02','19990714','04-AUG-2000','20-JUL-2000');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,     'XDUMMY1','R1111','UP03','19990714','04-FEB-2001','19-JAN-2001');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP04','19990714','04-AUG-2001','21-JUL-2001');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP05','19990714','04-FEB-2002','20-JAN-2002');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP06','19990714','04-AUG-2002','19-JUL-2002');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP07','19990714','04-FEB-2003','17-JAN-2003');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP08','19990714','04-AUG-2003','15-JUL-2003');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP09','19990714','04-FEB-2004','20-JAN-2004');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP10','19990714','04-AUG-2004','25-JUL-2004');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP11','19990714','04-FEB-2005','27-JAN-2005');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP12','19990714','04-AUG-2005','25-JUL-2005');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP13','19990714','04-FEB-2006','28-JAN-2006');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP14','19990714','04-AUG-2006','30-JUL-2006');
insert into test_dates1(pt,inv,invsite,task_name,fpddate,date1,date2)
values (
61090,'XDUMMY1','R1111','UP15','19990714','04-FEB-2007','31-JAN-2007');
/You said that sometimes the data contains values like 'NA'. Shouldn;t the sample data have an example or two of that?
Once the data is populated in the table , use the following query
select TASK_NAME,RCM_CAL_THEORETIC_DATES_FNC(MAX(fpddate),task_name) "DATE1"
from test_dates1
group by task_name When you say
RCM_CAL_THEORETIC_DATES_FNC, do you mean the function you posted in your first message, which was called
CAL_DATES_FNC, or is there another funciton?
When I make those changes and run the query, I get 15 rows:
TASK_NAME            DATE1
UP06                 04-AUG-2002
UP07                 04-FEB-2003
UP14                 04-AUG-2006
UP08                 04-AUG-2003
UP10                 04-AUG-2004
UP12                 04-AUG-2005
UP15                 04-FEB-2007
UP01                 04-FEB-2000
UP02                 04-AUG-2000
UP03                 04-FEB-2001
UP05                 04-FEB-2002
UP13                 04-FEB-2006
UP04                 04-AUG-2001
UP09                 04-FEB-2004
UP11                 04-FEB-2005Is that correct?
If so, what is the problem?
If not, what results should I get?
What is the function supposed to do?
Edited by: Frank Kulash on Nov 9, 2010 4:45 PM

Pl/sql Year to Date Function

Dear All!
Its very urgent task for me. i'm working on Oracle discoverer. i'm creating Project Year to Date report. i need one year to date function. i've only period name. The scnerio is this, in our company financial year is starting from (April to March i.e 01-April-2011 to 31-mar-2012). i need to apply YTD function on Period name. when any user select any period it will show from 01-apr-2011 to select mont. for example if user select Feb-12 then it must be from 01-apr-2011 to 29-feb-2012.
Please this is urgent.. give Query for function. please
Regards
Ahmed....

Hello,
Can you put an example on apex.oracle.com and provide a link, it will be much easier to help you out?
Regards,
Carl
blog : http://carlback.blogspot.com/
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Thanks
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v_sql varchar2(4000);
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select v_candidate_id, v_fname,v_current_employer,v_Experience_years from candidature where V_REQUIREMENT = 21 and v_experience_years >= 1 and v_experience_years <= and source like 'donkeyHire'
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does this type of report parse page items as text?
Why is it so?
Waiting for an early reply.
Thanks,
venkat

Venkat - You don't want to put ':SOURCES1' in quotes like that.
Scott

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q := 'select "ID",'||
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"%CM" = '',
"#CA" ='',
"%CA"=''
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Should your query be a valid SQL query?
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=======================
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
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=====================
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====================
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l_where varchar2(32000);
l_order_by varchar2(32000);
l_stmt_recordcount varchar2(32000);
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=============================
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thanks/kumar
Edited by: kumar73 on Apr 22, 2010 6:38 AM

It looks like the query string you are trying to pass back exceeds the 32K limit for a varchar. Where this is happening is kind of difficult to tell as it could be any number of points, and also depends on what you are passing into the process via page items.
I would first try to establish what combination of page items causes this error to occur. Then, starting from the bottom and working your way backwards, I would start 'switching off' some of the items you use to build your query until it breaks again, thus establishing which part is leading to the error.
Also, I'm not sure what :P10_STMT is doing (are you maybe using this for visiblity of the query created)?
It looks like the query string you are trying to pass back exceeds the 32K limit for a varchar. Where this is happening is kind of difficult to tell as it could be any number of points, and also depends on what you are passing into the process via page items.
I would first try to establish what combination of page items causes this error to occur. then, starting from the bottom and working your way backwards, I would start 'switching off' some of the items you use to build your query until it breaks again, thus establishing which part is leading to the error.
Also, I'm not sure what :P10_STMT is doing (are you maybe using this for visiblity of the query created)?

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Bye,
Flavio

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declare topqry varchar2(32000);
whereqry varchar2(32000);
finalqry varchar2(32000);
var_status varchar2(100);
division_status varchar2(50);
office_status varchar2(1000);
user_status varchar2(1000);
overdue_status varchar2(1000);
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else
overdue_status:= ' and FIRST_APPOINTMENT between
nvl(to_date(:P10_FIRST_APPT_START, ''mm/dd/yyyy''),FIRST_APPOINTMENT) and
nvl(to_date(:P10_FIRST_APPT_END,''mm/dd/yyyy''),FIRST_APPOINTMENT) ';
end if;
topqry := 'SELECT OFFICE_ID ,vp.PROSPECT_ID ,ENTRY_DATE ,ACCOUNT , NEXT_CONTACT_DATE ,ACTION_STEP ,
TARGET_CLOSE_DATE ,vp.STATUS ,SALESPERSON ,vp.SALES_TYPE ,service_name , FIRST_APPOINTMENT ,MODIFY_DATE ,EST_ANNUAL_REVENUE ,EST_INCREMENTAL_REVENUE ,
pi.NOTES , pi.SALES_TYPE ,pi.STATUS ,Contact ,Origin_Source FROM VMS_PROSPECTING_ITEMS pi right outer join VMS_PROSPECTS vp on vp.PROSPECT_ID = pi.PROSPECT_ID left outer join VMS_SERVICES vs on vs.service_ID = pi.service_ID where 1 = 1 ';
whereqry := ' and (not exists (select *
from VMS_PROSPECTING_ITEMS i3
where vp.prospect_id = i3.prospect_id)
or exists (select *
from VMS_PROSPECTING_ITEMS i2
where i2.order_id = pi.order_id
and active = ''Y'' )) and instr(upper(ACCOUNT),upper(nvl(:P10_ACCOUNT,ACCOUNT))) > 0 ';
whereqry := whereqry || var_status || division_status || office_status || user_status || overdue_status;
finalqry := topqry || whereqry;
return finalqry ;
end;

DATE function to get name of day for a Date given?

hi guys,
can anyone tell me what is the DATE function to get the name of day for a date given
(12/dec/2004)---returns SUNDAY

Hi peter
Your Query will return an error.
SQL> select to_char(to_date('12/dec/2004', 'mm/mon/yyyy'), 'DAY')from dual;
select to_char(to_date('12/dec/2004', 'mm/mon/yyyy'), 'DAY')from dual
ERROR at line 1:
ORA-01816: month may only be specified once.
month is specified twice.
select to_char(to_date('12/dec/2004', 'dd/mon/yyyy'), 'DAY')from dual;
Regards
Sasidhar.P

Validating Date parameter in discoverer

Hi
In the discoverer is it possible to validate or restrict the users to enter the wrong format of the date e.g. if the date format to be entered is dd-mm-yyyy, the system should not allow the users to enter mm-dd-yy,
Is it possible to put any validation?
As of now what is happening is discoverer is not telling me any thing after running for few minutes i am not getting any result, after that if i check i found that the date is in the wrong format
Regards
Ramesh Kumar S

Hi
If I may throw an aside in here. If your users are using 10.1.2 Plus there should be no need for users to key anything into any date parameter because Discoverer now has a calendar for this use. I find it much easier to teach my users to use a calendar than to try and teach them how to key dates in correctly.
One other thing you might want to consider if you have not already done so is to standardize a date format across your entire Discoverer installation. Then the date format will be obvious because its the same one they see all of the time.
Nevertheless, if you still want a mechanism to trap what users are keying it is possible to create functions that trap formats displaying appropriate error messages.
Best wishes
Michael

Passing parameter into select statement by using function in discoverer

I have created two functions in database named Period_in and Period_out and a global variable g_period_name
I have called Period_out function in VIEW(Select statement where condition).
I have registered Period_in function in discoverer admin then created calculation (called Period_in(:input parameter))in discoverer plus.
My expectation is user will enter period name and that will hit Period_in function and returns 1 and stores entered period name in g_period_name at runtime. then VIEW will executed and fetches data.
But i am getting no data found.
Problem is 2 functions running at the same time in select statement. Please help me to overcome this. Thanks in advance
FUNCTION period_in (p_period VARCHAR2)
      RETURN NUMBER
   AS
   BEGIN
      g_period_name := p_period;
      RETURN 1;
   END period_in;
   FUNCTION period_out
      RETURN VARCHAR2
   AS
   BEGIN
      RETURN g_period_name;
   END period_out;

You can use this code:
WITH cte
AS ( SELECT EmpID ,
EmpName ,
[dbo].[udf_testFunction](EmpID) AS testfunctionvalue
FROM #Temp
SELECT EmpID ,
EmpName ,
testfunctionvalue ,
testfunctionvalue * EmpID ,
testfunctionvalue + 2
FROM cte
But using scalar functions in select clause can hurt the performance. Please see this link:
SQL Server Scalar User Defined Function Performance
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T-SQL e-book by TechNet Wiki Community
T-SQL blog

Date Functions in Discoverer Query

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