Sqlplus &file elimination

Question

Hi all,
I would like update a field in the table. Varchar2 field contains "&file= " string. I execute;
update table_name set F1='XXX&file=XX' where ... ;
However, sqlplus parses the statement and prompts me Enter value for file:
How can I update my field value containing "&file"
Br,

Answer 1

TEST@db102 SQL> desc test
Name                                      Null?    Type
C1                                                 VARCHAR2(50)
TEST@db102 SQL> set escape on
TEST@db102 SQL> insert into test values('\&File');
1 row created.
TEST@db102 SQL> select * from test;
C1
&File
TEST@db102 SQL> update test set c1='XXX\&file=XX';
1 row updated.
TEST@db102 SQL> select * from test;
C1
XXX&file=XX
TEST@db102 SQL>