SQL Problem

SQL> --void record check
SQL> select *
  2  from zz_voidrecordst
  3  where ref = '1394';

REF   VOIDSTART VOIDEND   PATH
----- --------- --------- --------------------
1394  08-FEB-99 07-APR-02 PIPE

SQL> --actual transactions
SQL> select vtran_pro_propref,vtran_effective_date,vtran_dr
  2  from   void_transactions
  3  where  vtran_effective_date >= '01-APR-2002'
  4  and vtran_pro_propref = '1394';

VTRAN_PRO_PROPREF         VTRAN_EFF  VTRAN_DR
------------------------- --------- ---------
1394                      01-APR-02        58

SQL> -- LINK:
SQL> select sum(V.vtran_dr) as Total,
  2      Z.REF,
  3      Z.Path
  4  from   void_transactions v, zz_voidrecordst z
  5  where  v.vtran_pro_propref = z.ref and
  6      (v.vtran_effective_date between to_date(z.voidstart) and
to_date(z.voidend))
  7        and v.vtran_effective_date >= '01-APR-2002'
  8      and z.ref = '1394'
  9  group by Z.REF, Z.Path;

no rows selected

Why is the bottom query return no rows?

Chris Sol
Analyst Programmer
IT Development
Genesis Housing Group
Telephone 02085374169


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