[Oracle 8i] Need help with bind variable in add_months function

Question

I'm trying to put a variable within my add_months function:
AND     t1.edatetime >= add_months(sysdate,:v1)
AND     t1.edatetime <= add_months(sysdate,:v2)I have tried defining the variable both as 'integer' type and 'numeric' type, but in both cases, my query returns no results. If I hard code the values, it works just fine.
Any suggestions?

Answer 1

Hi,
Sorry, I can't reproduce the problem.
What do you mean by "I have tried defining the variable both as 'integer' type and 'numeric' type"?
Like Max said, you should post a complete script that gets the incorrect results.
Include your CREATE TABLE and INSERT statements, or use tables that are commonly available.
For example:
VARIABLE      v1     NUMBER
VARIABLE      v2     NUMBER
EXEC  :v1 := -28 * 12;
EXEC  :v2 := -27 * 12;
PROMPT       ===== Checking values of bind variables  =====
SELECT       :v1
,       :v2
FROM       dual;
PROMPT       =====  Main query (expecting 1 row of output) =====
SELECT       ename
,       hiredate
FROM       scott.emp
WHERE       hiredate     >= ADD_MONTHS (SYSDATE, :v1)
AND       hiredate     <= ADD_MONTHS (SYSDATE, :v2)
;Output:
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
===== Checking values of bind variables  =====
       :V1        :V2
      -336       -324
=====  Main query (expecting 1 row of output) =====
ENAME      HIREDATE
MILLER     23-Jan-1982