Can I change the Column Name without losing data and change the sequence

Question

Dear Experts,
I want to change the column name without changing the sequence and dont want lose the data.

Answer 1

Oracle Version : ?
Example Based on 10g.
SQL> conn scott/tiger
Connected.
SQL> create table col1 as select * from all_objects where rownum <= 100;
Table created.
SQL> alter table col1  add constraints col1_pk_objid primary key(object_id);
Table altered.
SQL> desc col1
Name                                      Null?    Type
OWNER                                              VARCHAR2(30)
OBJECT_NAME                                        VARCHAR2(30)
SUBOBJECT_NAME                                     VARCHAR2(30)
OBJECT_ID                                 NOT NULL NUMBER
DATA_OBJECT_ID                                     NUMBER
OBJECT_TYPE                                        VARCHAR2(19)
CREATED                                            DATE
LAST_DDL_TIME                                      DATE
TIMESTAMP                                          VARCHAR2(19)
STATUS                                             VARCHAR2(7)
TEMPORARY                                          VARCHAR2(1)
GENERATED                                          VARCHAR2(1)
SECONDARY                                          VARCHAR2(1)
SQL> alter table col1 rename column object_id to object_no;
Table altered.
SQL> desc col1;
Name                                      Null?    Type
OWNER                                              VARCHAR2(30)
OBJECT_NAME                                        VARCHAR2(30)
SUBOBJECT_NAME                                     VARCHAR2(30)
OBJECT_NO                                 NOT NULL NUMBER
DATA_OBJECT_ID                                     NUMBER
OBJECT_TYPE                                        VARCHAR2(19)
CREATED                                            DATE
LAST_DDL_TIME                                      DATE
TIMESTAMP                                          VARCHAR2(19)
STATUS                                             VARCHAR2(7)
TEMPORARY                                          VARCHAR2(1)
GENERATED                                          VARCHAR2(1)
SECONDARY                                          VARCHAR2(1)
SQL> column column_name format a30
  1  select column_name,constraint_name
  2  from user_cons_columns
  3  where table_name = 'COL1'
  4* and owner = 'SCOTT'
COLUMN_NAME                    CONSTRAINT_NAME
OBJECT_NO                      COL1_PK_OBJID
SQL>
also go through
http://www.dizwell.com/prod/node/65
Message was edited by:
user52