How to use column name as variable in select statement

hi,
i want to make a sql query where in select statement using variable as a column name. but its not working plz guide me how can i do this.
select :m1 from table1;
regards

Hi,
Is this what you want..
SQL> select &m1 from dept;
Enter value for m1: deptno
old   1: select &m1 from dept
new   1: select deptno from dept
    DEPTNO
        10
        20
        30
        40
SQL> select &m1 from dept;
Enter value for m1: dname
old   1: select &m1 from dept
new   1: select dname from dept
DNAME
ACCOUNTING
RESEARCH
SALES
OPERATIONS
SQL> select &&m1 from dept;
Enter value for m1: loc
old   1: select &&m1 from dept
new   1: select loc from dept
LOC
NEW YORK
DALLAS
CHICAGO
BOSTON
SQL> select &&m1 from dept;
old   1: select &&m1 from dept
new   1: select loc from dept
LOC
NEW YORK
DALLAS
CHICAGO
BOSTONIf you use single '&' then each time you fire the query, It will ask for the new value..
But if you will use double '&&' the value of m1 will be persistent across the session..
Twinkle

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