Alter Table Modify Column Oracle 12c

August 1, 2018

As the world shifts to more digital solutions, the need for relational databases has never been higher. Oracle 12c is one of the most widely used relational databases, allowing users to store data and interact with it in meaningful ways. One of the features of Oracle 12c is the ability to alter tables and modify columns using an Alter Table Modify Column command. This command gives users control over their data, allowing them to adjust settings and customize the way their database looks and behaves. In this article, we'll explore how the Alter Table Modify Column command works in Oracle 12c and why it's so important for database management.

Altering tables and modifying columns is essential for any database manager. It allows changes to be made quickly and easily, without having to rewrite large amounts of code or re-create entire tables. With Oracle 12c, the Alter Table Modify Column command makes this process simpler than ever. This command lets you add, change, or remove columns from existing tables, as well as modify the data type of existing columns. This capability is critical for ensuring your database is up-to-date and organized properly.

The Alter Table Modify Column command can be used to add new columns to existing tables, alter the data type of existing columns, or remove columns entirely. To add a new column, simply specify the column name, data type, and any other attributes that you would like to set for the column. For example, if you wanted to add a new column called “name” to an existing table, you could use the following command:

ALTER TABLE myTable ADD COLUMN name varchar2 (100);

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