How to pass a result of SQL query to shell script variable

Question

Hi all,
I am trying to pass the result of a simple SQL query that only returns a single row into the shell script variable ( This particular SQL is being executed from inside the same shell script).
I want to use this value of the variable again in the same shell scirpt by opening another SQL plus session.
I just want to have some values before hand so that I dont have to do multiple joins in the actual SQL to process data.

Answer 1

Here an example :
SQL> select empno,ename,deptno from emp;
     EMPNO ENAME          DEPTNO
      7369 SMITH              20
      7499 ALLEN              30
      7521 WARD               30
      7566 JONES              20
      7654 MARTIN             30
      7698 BLAKE              30
      7782 CLARK              10
      7788 SCOTT              20
      7839 KING               10
      7844 TURNER             30
      7876 ADAMS              20
      7900 JAMES              30
      7902 FORD               20
      7934 MILLER             10
14 rows selected.
SQL> select * from dept;
    DEPTNO DNAME          LOC
        10 ACCOUNTING     NEW YORK
        20 RESEARCH       DALLAS
        30 SALES          CHICAGO
        40 OPERATIONS     BOSTON
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
$ cat my_shell.sh
### First query #####
ENAME_DEPTNO=`sqlplus -s scott/tiger << EOF
set pages 0
select ename,deptno from emp where empno=$1;
exit
EOF`
ENAME=`echo $ENAME_DEPTNO | awk '{print $1}'`
DEPTNO=`echo $ENAME_DEPTNO | awk '{print $2}'`
echo "Ename         = "$ENAME
echo "Dept          = "$DEPTNO
### Second query #####
DNAME_LOC=`sqlplus -s scott/tiger << EOF
set pages 0
select dname,loc from dept where deptno=$DEPTNO;
exit
EOF`
DNAME=`echo $DNAME_LOC | awk '{print $1}'`
LOC=`echo $DNAME_LOC | awk '{print $2}'`
echo "Dept Name     = "$DNAME
echo "Dept Location = "$LOC
$ ./my_shell.sh 7902
Ename         = FORD
Dept          = 20
Dept Name     = RESEARCH
Dept Location = DALLAS
$