SELECT ABC1,ABC2,ABC3,ABC4,ABC5,ABC6, ABC7, ABC8
FROM TBIBM
WHERE ABC2='$account_num'  AND ABC6 = '$account_due_date' AND ABC5='$n
+_year'
[download]

???????

• Step one, kill whoever designed the database schema.
• Step two, hide the body, destroy any evidence.
• Step three, create a sane schema, copy the data if necessary and dump the old database.

Also if you have the whole row nicely stacked in a hash, don't bother copying it to separate variables.