Inserting multiple rows using a subquery getting ora error 0097 :Misssing )

Question

Iam getting ora :0097 missing right parenthesis
insert into id_bfs_user_access_proj_racopy
(user_name, project_id)
((Select user_name from id_bfs_user_access_cc Where cost_center_id in (select cost_center_id from ID_COST_CENTER_GROUPS_V where cost_center_group = 'Engineering')), 3)
If i run below sql it is working fine can anyone help me in this
insert into id_bfs_user_access_proj_racopy
(user_name)
(Select user_name from id_bfs_user_access_cc Where cost_center_id in (select cost_center_id from ID_COST_CENTER_GROUPS_V where cost_center_group = 'Engineering'))

Answer 1

"how can it be valid since 3 is another column value and for user name we have to use entire sql"
Did you try it? It is perfectly valid to select a constant as part of a SELECT statement, which is what 516945's solution does.
SQL> CREATE TABLE t (id NUMBER, descr VARCHAR2(10));
Table created.
SQL> INSERT INTO t VALUES (1, 'One');
1 row created.
SQL> INSERT INTO t VALUES (2, 'Two');
1 row created.
SQL> COMMIT;
Commit complete.
SQL> SELECT id, descr, 'This is a constant string' const_str, 42 const_num
  2  FROM t;
        ID DESCR      CONST_STR                  CONST_NUM
         1 One        This is a constant string         42
         2 Two        This is a constant string         42John