SQL | ALTER (RENAME)

Sometimes we may want to rename our table to give it a more relevant name. For this purpose we can use ALTER TABLE to rename the name of table.
*Syntax may vary in different databases.

Syntax(Oracle,MySQL,MariaDB):

ALTER TABLE table_name
RENAME TO new_table_name;

Columns can be also be given new name with the use of ALTER TABLE.
Syntax(Oracle):

ALTER TABLE table_name
RENAME COLUMN old_name TO new_name;

Syntax(MySQL,MariaDB):

ALTER TABLE table_name
CHANGE COLUMN old_name TO new_name;

Sample Table:

Student

ROLL_NO	NAME	AGE
1	Ram	20
2	Abhi	21
3	Rahul	22
4	Tanu	19

QUERY:

• Change the name of column NAME to FIRST_NAME in table Student.

ALTER TABLE Student RENAME COLUMN NAME TO FIRST_NAME;

OUTPUT:

ROLL_NO	FIRST_NAME	AGE
1	Ram	20
2	Abhi	21
3	Rahul	22
4	Tanu	19

• Change the name of the table Student to Student_Details

ALTER TABLE Student RENAME TO Student_Details;

OUTPUT:

Student_Details

ROLL_NO	FIRST_NAME	AGE
1	Ram	20
2	Abhi	21
3	Rahul	22
4	Tanu	19

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