Latest Tutorials| Questions and Answers|Ask Questions?|Site Map



Home Quartz SQL Alter Column Name

Related Tutorials


 
 

Share on Google+Share on Google+

SQL Alter Column Name

Advertisement
sql alter column name

SQL Alter Column Name

     

Alter Column Name in SQL is used to change or modify the name of column in a table.

Understand with Example

The Tutorial explain you a simple example on SQL Alter Column Name. In this Example, create a table 'Stu_Table' using create statement. The insert into help you to add the records into created table 'Stu_Table'. The select statement retain you the records from table 'Stu_Table'. The ALTER  table statement in SQL is used to modify the table 'Stu_Table'.

Create Table Stu_Table

 

 

 

create table Stu_Table(Stu_Id integer(2), Stu_Name varchar(15), 
Stu_Class  varchar(10) )

Insert data into Stu_Table

insert into Stu_Table (Stu_Id, Stu_Name) values(1,'Komal');
insert into Stu_Table (Stu_Id, Stu_Name) values(2,'Ajay');
insert into Stu_Table (Stu_Id, Stu_Name) values(3,'Rakesh');
insert into Stu_Table (Stu_Id, Stu_Name) values(4,'Bhanu');
insert into Stu_Table (Stu_Id, Stu_Name) values(5,'Santosh');

Stu_Table

+--------+----------+-----------+
| Stu_Id | Stu_Name | Stu_Class |
+--------+----------+-----------+
| 1      | Komal    | 10        |
| 2      | Ajay     | 10        |
| 3      | Rakesh   | 10        |
| 4      | Bhanu    | 10        |
| 5      | Santosh  | 10        | 
+--------+----------+-----------+

Syntax

The ALTER  table statement in SQL is used to modify the table 'Stu_Table' and change keyword change the name of field to new  name of field. The syntax used for Alter Table is given below: 

Alter table table_name change old_column_name  new_column_name type size   

Query

The Alter Table alter the table 'Stu_Table'. The change keyword change the column name of  Stu_Id to Id in table 'Stu_Table'.

Alter table Stu_Table change Stu_Id Id varchar(10)

Stu_Table

+--------+----------+-----------+
| Id     | Stu_Name | Stu_Class |
+--------+----------+-----------+
| 1      | Komal    | 10        |
| 2      | Ajay     | 10        |
| 3      | Rakesh   | 10        |
| 4      | Bhanu    | 10        |
| 5      | Santosh  | 10        | 
+--------+----------+-----------+
Advertisement

If you enjoyed this post then why not add us on Google+? Add us to your Circles



Liked it!  Share this Tutorial


Follow us on Twitter, or add us on Facebook or Google Plus to keep you updated with the recent trends of Java and other open source platforms.

Posted on: April 18, 2011

Related Tutorials

Discuss: SQL Alter Column Name  

Post your Comment


Your Name (*) :
Your Email :
Subject (*):
Your Comment (*):
  Reload Image
 
 
Comments:0
DMCA.com