How to pass unix variable to SQLPLUS

UNIX for Advanced & Expert Users
1

hi fellows,

can any body tell me how to pass unix variables to oracle

code is...
#! /bin/ksh
echo ENTER DATE VALUE's
read START_DATE END_DATE
sqlplus xyx/abc@oracle
select * from table1 where coloumn1 between $START_DATE and $END_DATE;

is this is correct way...........

Thanks in advance

2

....by searching the forums for 'sqlplus' [to start with]?