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(MySQL, Oracle):
ALTER TABLE table_name RENAME COLUMN old_name TO new_name;
Syntax(MariaDB):
ALTER TABLE table_name CHANGE COLUMN old_name TO new_name;
Sample Table:
StudentROLL_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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