How to modify table name in Oracle

Oracle is a powerful relational database that can store and manage large amounts of data. In Oracle, tables are one of the most basic ways of storing data. In some cases, you may need to change the name of the table. This article will introduce how to modify the table name in Oracle.

Step one: Log in to the database

Before you start modifying the table name, you need to log in to the Oracle database as an administrator. You can log in using SQL Plus, enter your username and password and press "Enter".

Step 2: Query table names

In Oracle, you can use the following command to query all table names:

SELECT table_name FROM user_tables;

After running this command, you will get a list , which contains the names of all user tables. Find the name of the table you want to modify and note its exact spelling.

Step 3: Modify the table name

Now, you have determined the name of the table you want to modify. To change the table name, use the following syntax:

ALTER TABLE old_table_name RENAME TO new_table_name;

In this syntax, replace "old_table_name" with the original name of the table you want to rename and "new_table_name" with the name you want to rename it for the new name. Please make sure both names are valid table names.

For example, assuming you want to rename the table named "employees" to "staff", you can use the following command:

ALTER TABLE employees RENAME TO staff;

Please note that if you use Oracle keywords reserved, dropping the existing table and creating a new table with a new name might be a better option.

Step 4: Query the table name

To confirm that you have successfully modified the table name, please query all table names again:

SELECT table_name FROM user_tables;

You should be able to find the new table name in the list Table Name. If any problems arise, check your syntax and make sure you have sufficient permissions to perform this operation.

Summary

In Oracle, modifying the table name is quite simple, just use the ALTER TABLE statement. First, query all table names to find the table you want to rename, then rename it using the appropriate syntax. Please make sure your syntax is correct and you have the required permissions.

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