Trouble with Date concatenation with varchar2 string in oracle

Posted on 2008-10-26
Last Modified: 2013-12-07
I'm trying to concatenate dates with other Sql statements so I can place common Where statements in 1 procedure.

I am running into troubles with the date.
What is happening is To and From dates are in format dd-mm-yyyy as in 10-01-2008

When I concatenate into v_SQL which is varchar2 it becomes dd-MONth- YY as in 10-JAN-08

Can somebody please explain why and how to fix?
-- v_inputdate is varchar2
v_SQL varchar2(1000);
 v_strTmp varchar2(100);
 v_WhereSet number;
 v_ToDate DATE;
 v_FromDate DATE; 
 -- Input Date
  If Length(v_InputDate) > 0 Then
  -- Date that is input is 10th January 2008
	v_FromDate := To_Date(v_InputDate,'dd-mm-yyyy');
-- I am now 10-01-2008	
If v_ReportType = 'D' Then
		v_ToDate := v_FromDate + 1 ;
-- I am now 11-01-2008
	 End If; 
	 If v_WhereSet = 1 Then
		v_strTmp := ' AND ';
		v_WhereSet := 1;
		v_strTmp := ' WHERE  ';		
	 End If;
	 v_SQL := v_SQL || v_strTmp || ' pr.pres_dt >= ' || v_FromDate || 
				 ' AND pr.pres_dt < '  || v_ToDate;   
-- At this point v_SQL changes to have v_FromDate as 10-JAN-08  
-- My data is stored as dd-mm-yyyy.
  End If;

Open in new window

Question by:cmrnp
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 10

Accepted Solution

dbmullen earned 500 total points
ID: 22810072
well..   you're really making things hard on your self...

hard way:
         v_SQL := v_SQL || v_strTmp || ' pr.pres_dt >= to_date(''' || to_char(v_FromDate,'yyyymmdd') ||
                                ''',''yyyymmdd'')  AND pr.pres_dt < to_date('''  || to_char(v_ToDate,'yyyymmdd') || ''',''yyyymmdd'')';

easy way:
         v_sql := 'select count(*) from use_binds pr where pr.pres_dt >= :v_from_date and pr.pres_dt < :v_todate';        
         execute immediate v_sql into yadda using v_fromdate, v_todate;

create table use_binds as select sysdate pres_dt from dual;
set serveroutput on
v_sql varchar2(3000);
v_strtmp varchar2(100) := 'table';
v_fromdate date := trunc(sysdate);
v_todate   date := trunc(sysdate) + 1;
yadda number(10) := 0;
         v_SQL := v_SQL || v_strTmp || ' pr.pres_dt >= to_date(''' || to_char(v_FromDate,'yyyymmdd') || 
                                ''',''yyyymmdd'')  AND pr.pres_dt < to_date('''  || to_char(v_ToDate,'yyyymmdd') || ''',''yyyymmdd'')';
         v_sql := ' ' ;
         v_sql := 'select count(*) from use_binds pr where pr.pres_dt >= :v_from_date and pr.pres_dt < :v_todate';
         execute immediate v_sql into yadda using v_fromdate, v_todate;
         dbms_output.put_line(to_char(yadda) );

Open in new window


Author Closing Comment

ID: 31510189

Most questions i've had have not been answered but this was spot on.

Thanks heaps.

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Background In several of the companies I have worked for, I noticed that corporate reporting is off loaded from the production database and done mainly on a clone database which needs to be kept up to date daily by various means, be it a logical…
Configuring and using Oracle Database Gateway for ODBC Introduction First, a brief summary of what a Database Gateway is.  A Gateway is a set of driver agents and configurations that allow an Oracle database to communicate with other platforms…
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.
This video shows information on the Oracle Data Dictionary, starting with the Oracle documentation, explaining the different types of Data Dictionary views available by group and permissions as well as giving examples on how to retrieve data from th…

724 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question