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pass value from Oracle sql to Korn shell

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# 1  
Old 09-20-2012
pass value from Oracle sql to Korn shell
Hi All ,
I am trying to pass a value from sqlplus to korn shell .
There is a table tab1 in Oracle that has a column userdate.
I need to pass the userdate to the korn shell . This is what I am doing .

Code:
VALUE=`sqlplus -silent username/password << END  
set pagesize 0 feedback off verify off heading off echo off termout off
set serveroutput on
variable retval number;
begin
SELECT to_CHAR(userdate,'MMDD') into :retval FROM tab1 where rownum=1; 
end;
/
exit :retval;
END`
echo "MMDD IS $VALUE"

But the output is only
Code:
MMDD is

I am not getting a value . For example if the userdate in the table tab1 is 9/20/2012 I must be getting the output of my korn shell script as
0920 . All I am getting is, MMDD is
Please help.

Thanks
Megha.
# 2  
Old 09-20-2012
Usually I get my data from stdout. Often I filter it out like this, so I get exactly what I want and all messages go to a log for debug:
Code:
export MMDD=$( echo "select
  'dAtA' || to_char(userdate,'MMDD') || 'eNdATa' x
 from dual ;
 " | sqlplus ... 2>&1 | sed '
  w logfile
  s/.*dAtA\(.*\)eNdAtA.*/\1/
  t
  d
 ' )

UNIX exit() returns a character 0-255 status, not enough for MMDD, and it is for error checking with:
Code:
some_command some_args
RET=$?
if [ $RET != 0 ]
 then
  echo error return: $RET >&2
 fi

Last edited by DGPickett; 09-20-2012 at 06:06 PM..
# 3  
Old 09-21-2012
Hi

The tried the above and I still get the same output.
MMDD is
The value is not being displayed.

Thanks
Megha
# 4  
Old 09-21-2012
Must be an SQL issue, and I do not have an Oracle this gig. Try CURRENT_DATE or SYSDATE inplkace of userdate. Google says userdate is not defined. Maybe knock off the -silent, as my sed moves all that to the log?
# 5  
Old 09-21-2012
Try something like this:
Code:
VALUE=`sqlplus -silent username/password << END  
set pagesize 0 feedback off verify off heading off echo off termout off
SELECT to_CHAR(userdate,'MMDD') FROM tab1 where rownum=1; 
END
`
echo "MMDD IS $VALUE"

No need for PL/SQL here and stdout fits your needs better than the returnvalue of SQL*Plus (leading zero is not stripped...).
# 6  
Old 09-21-2012
Still no luck . Am not sure why the process is unable to display the value.
Please let me know what I am missing here.

Thanks
Megha
# 7  
Old 09-21-2012
What does the query return when you execute it directly in sqlplus? Are you sure that userdate in the returned row is not null?
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