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

https://ittutorial.org/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.

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

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