Change the column name from StudentName to FirstName in MySQL?

Use CHANGE with ALTER statement. Let us first create a table −

mysql> create table DemoTable
-> (
-> StudentName varchar(100),
-> Age int
-> );
Query OK, 0 rows affected (0.84 sec)

Now check the description of table −

mysql> desc DemoTable;

Output

This will produce the following output −

+----------------+--------------+------+-----+---------+-------+
| Field          | Type         | Null | Key | Default | Extra |
+----------------+--------------+------+-----+---------+-------+
| StudentName    | varchar(100) | YES  |     | NULL    |       |
| Age            | int(11)      | YES  |     | NULL    |       |
+----------------+--------------+------+-----+---------+-------+
2 rows in set (0.25 sec)

Here is the query with ALTER −

mysql> alter table DemoTable
-> add column Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
-> add column CountryName varchar(100) after Age,
-> change column StudentName FirstName varchar(200);
Query OK, 0 rows affected (1.51 sec)
Records: 0 Duplicates: 0 Warnings: 0

Now check the description of table once again −

mysql> desc DemoTable;

Output

This will produce the following output −

+-------------+--------------+------+-----+---------+----------------+
| Field       | Type         | Null | Key | Default | Extra          |
+-------------+--------------+------+-----+---------+----------------+
| FirstName   | varchar(200) | YES  |     | NULL    |                |
| Age         | int(11)      | YES  |     | NULL    |                |
| CountryName | varchar(100) | YES  |     | NULL    |                |
| Id          | int(11)      | NO   | PRI | NULL    | auto_increment |
+-------------+--------------+------+-----+---------+----------------+
4 rows in set (0.00 sec)

Karthikeya Boyini

Published on 12-Jul-2019 07:40:33

• Related Questions & Answers
• Change the column name from a MySQL table with Student record?
• How can I change the name of an existing column from a MySQL table?
• How to change the length of the Name column from CHAR(20) to CHAR(50)?
• How to extract column name and type from MySQL?
• Change a MySQL Column datatype from text to timestamp?
• Rename column name in MySQL?
• How to make 'from' as column name in MySQL?
• How to change the name of single column using setNames in R?
• Problem using the column name 'from' in a MySQL query?
• How to change MySQL column definition?
• Wildcards in column name for MySQL?
• Display distinct column name in MySQL
• How to find the name of a column in MySQL?
• How to get column index from column name in Python Pandas?
• Change the file extension in the text column in MySQL?