Help... Timestamp Conversion

Question

Hi All,
I need to compare LONG datatype with TIMESTAMP,how can i include it in the WHERE clause?
E.g; i need to find last 3 days data.
EMP Table
EmpNo - NUMBER
Ename - VARCHAR2
Entry_Point - LONG datatype
SELECT *
FROM emp
WHERE TRUNC(entry_point) <= TRUNC(SYSTIMESTAMP) - 3;
Above query is showing conversion error.
Please help!

Answer 1

Hello Saubhik,
Sorry for the late reply.
I saw your code with respect to DBMS_LOB.SUBSTR; but there are some error encountered.
Plz find code below.
DECLARE
     CURSOR cur IS
        SELECT partition_name,table_name, high_value FROM dba_tab_partitions
        where table_owner='MIT'
        and table_name='ORDER_HDR' ;
      vpart dba_tab_partitions.partition_name%type;
      vtab  dba_tab_partitions.table_name%type;
      v_high LONG;
    BEGIN
      OPEN cur;
      LOOP
        FETCH cur INTO vpart,vtab,v_high;
       EXIT WHEN cur%NOTFOUND;
       IF DBMS_LOB.substr(v_high,11,1)<= TRUNC(SYSTIMESTAMP) - 3 THEN
        dbms_output.put_line(v_high||' Matched');
       END IF;
     END LOOP;
     CLOSE cur;
   END;Error
An error was encountered performing the requested operation:
ORA:01858: a non-numeric character was found where a numeric was expected
ORA:06512: at line 16
018518.00000 - "a non-numeric character was found where a numeric was expected"
*cause: The input data to be converted using a data format model was incorrect.
     The input data did not contain a number where a number was required by the format model
*action: Fix the input data or the format model to make sure the elements match in number and type. Then re-try the operation.
Error at line:2
Entry in the table - DBA_TAB_PARTITIONS
partition_name table_name high_value
===========================
SYS_P234645 ORDER_HDR TO_DATE(' 2010-06-09 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')
SYS_P235118 ORDER_HDR TO_DATE(' 2010-07-21 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')
Edited by: Sunil G on Sep 28, 2010 5:39 AM
Edited by: Sunil G on Sep 28, 2010 5:40 AM