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Aryan Kumar

Aryan Kumar

31-Aug-2023

To rename a column in an existing table using SQL, you can use the ALTER TABLE statement. The syntax for the ALTER TABLE statement is:

SQL

ALTER TABLE table_name RENAME COLUMN old_column_name TO new_column_name;

The table_name is the name of the table that contains the column that you want to rename. The old_column_name is the name of the column that you want to rename. The new_column_name is the new name for the column.

For example, the following statement will rename the name column in the customers table to customer_name:

SQL

ALTER TABLE customers RENAME COLUMN name TO customer_name;

It is important to note that you cannot rename a column that is being used by another object, such as a constraint or a view.

Here are some additional things to keep in mind when renaming a column:

  • The ALTER TABLE statement is a Transact-SQL statement. Transact-SQL statements are not reversible, so it is important to make sure that you are renaming the correct column.
  • You cannot rename a column that is being used by another object, such as a constraint or a view.
  • If you are renaming a column that is a primary key or a unique key, you need to update the constraints on any tables that reference the original column.
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