Alter table rename column in Oracle

I will explain Alter table rename column in Oracle in this post.





Oracle Rename Column

Sometimes you may need renaming column of existing table.

Rename column syntax in Oracle as follows.

SQL> alter table schema_name.table_name rename column old_column_name TO  new_column_name;


For example;

You can rename column name as follows using alter command.

 alter table hr.employees rename column employee_id to emp_id;






You can read the following post to learn how to rename table or other alter table operations.

Rename Table in Oracle


Alter Table and Alter Table Add or Drop Column in Oracle SQL | Oracle SQL Tutorials -29







Drop & Add and Modify Column in Oracle

You can add new column, drop existing column and modify column as follows.

SQL> alter table msdeveci.mytest add city varchar2(24);

Table altered.

SQL> alter table msdeveci.mytest modify city varchar2(36);

Table altered.

SQL> alter table msdeveci.mytest drop column city;

Table altered.




Do you want to learn Oracle Database for Beginners, then read the following articles.

Oracle Tutorial | Oracle Database Tutorials for Beginners ( Junior Oracle DBA )


About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.

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