Rename Table In Sql
Contents
How to rename table in SQL Server by query?
SQL Query – SQL Server provides a standard stored procedure called SP_RENAME for renaming the user-created object in the current database. The user-created object can be a table or column.
- The following syntax is used to rename the table:
- EXEC sp_rename ‘old_table_name’, ‘new_table_name’
- Example
- We can demonstrate the renaming of a table using the below employee table:
- Now, we will use the sp_rename stored procedure syntax to change the name of an employee table to employee_info, Here is the query:
- EXEC sp_rename ’employee’, ’employee_info’;
- Executing this statement, SQL Server shows the following message:
We will get this message because while renaming a table, SQL Server does not automatically change the name of any references associated with that table. However, the table is renamed successfully. We can verify whether the table is renamed or not by executing the SELECT statement: 
How to rename table name in SQL Oracle?
Using ALTER TABLE as a rename command in Oracle – There is an alternative to RENAME TABLE that can also be used to give the required table a new name. It is a statement called ALTER TABLE, and it has the following syntax: ALTER TABLE table_name RENAME TO new_table_name; Please note that you can’t rename multiple tables with a single ALTER TABLE statement.
How to rename column in MySQL?
How to rename a column in MySQL using the ALTER TABLE command – To rename a column in MySQL the following syntax is used: ALTER TABLE table_name RENAME COLUMN old_column_name TO new_column_name; This command is used to change the name of a column to a new column name.
How do I rename multiple tables in SQL?
Rename tables in SQL using Transact SQL – SQL query does not have any statement that can directly rename any table. However, there is a stored procedure named sp_rename that allows you to change the name of a tables in SQL. Below syntax you can use to change the name of the tables. Syntax: EXEC sp_rename ‘old_table_name’, ‘new_table_name’
What is the rename command in DDL?
Rename: RENAME command is used to change the name of the table or a database object.
Which command is used to rename a table you own?
Summary – Whoa! We covered a lot of ground in this chapter! We’ve explored the general syntax for ALTER TABLE and also looked at numerous ways in which we can alter an existing table:
Renaming a table Renaming a column Changing a column’s data type Adding a constraint Removing a constraint Adding a column Removing a column Dropping a table
Although the SQL statements for most of these actions use the same initial ALTER TABLE clause, the specific syntax for each varies according to the action. Let’s quickly recap:
| Action | Command | Notes |
|---|---|---|
| Add a column to a table | ALTER TABLE table_name ADD COLUMN column_name data_type CONSTRAINTS; | Alters a table by adding a column with a specified data type and optional constraints. |
| Alter a column’s data type | ALTER TABLE table_name ALTER COLUMN column_name TYPE data_type; | Alters the table by changing the datatype of column. |
| Rename a table | ALTER TABLE table_name RENAME TO new_table_name; | Changes the name of a table in the currently connected to database. |
| Rename a column within a table | ALTER TABLE table_name RENAME COLUMN column_name TO new_column_name; | Renames a column of the specified table. |
| Add column constraint (`NOT NULL`) | ALTER TABLE table_name ALTER COLUMN column_name SET NOT NULL; | Adds a specified constraint to the specified table column. |
| Add table constraint | ALTER TABLE table_name ADD CONSTRAINT constraint_name constraint_clause; | Adds a specified constraint to the specified table. |
| Remove a table constraint | ALTER TABLE table_name DROP CONSTRAINT constraint_name; | Removes a constraint from the specified table. |
| Remove a column constraint | ALTER TABLE table_name ALTER COLUMN column_name DROP NOT NULL; | Removes a constraint from the specified column. This syntax is necessary for `NOT NULL` constraints, which aren’t specifically named. |
| Remove a column from a table | ALTER TABLE table_name DROP COLUMN column_name; | Removes a column from the specified table. |
| Delete a table from the database | DROP TABLE table_name; | Permanently deletes the specified table from its database. |
In this section of the book we covered how to change the structure and foundation of our database and its relations. Having the database structure in place is only part of the story though; as explained earlier the schema and data work together to provide us with the structured information that we require from our database.
- In the next section we’ll focus on using that new structure to manage data within our database, learning how to select, add, update, and delete data as needed.
- Before moving on to the next section, make sure that you have a clear understanding of the topics that we covered in this one at a conceptual level.
You probably don’t need to memorize all of the specific syntax we’ve covered in this set of chapters. The syntax for DDL is generally only used at the outset when first creating your database and its tables, which is much less often than when you actually work with the data in those tables.
- As long as you have a clear picture of how schema works, you can always refer back to this book or to the official documentation if you need to check on a particular piece of syntax.
- Over the next few chapters however, you should familiarize yourself as much as possible with the DML syntax which we will cover.
The bulk of the time you spend working with databases will be spent manipulating data, so it is important to be as fluent as possible with the relevant commands and clauses.
How to rename table name in SQL Oracle?
Using ALTER TABLE as a rename command in Oracle – There is an alternative to RENAME TABLE that can also be used to give the required table a new name. It is a statement called ALTER TABLE, and it has the following syntax: ALTER TABLE table_name RENAME TO new_table_name; Please note that you can’t rename multiple tables with a single ALTER TABLE statement.
