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SQL Add Column Position

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SQL Add Column Position is used to add the column at the specific position. The Alter statement copy the structure of existed table and make a modify a table on the basis of specified Query.

SQL Add Column Position

     

SQL Add Column Position is used to add the column at the specific position. The Alter statement copy the structure of existed table and make a modify a table on the basis of specified Query.

Understand with Example

The Tutorial illustrates an example from SQL Add Column Position to the existing table 'Stu_Table'.

Create Table Stu_Table

 

 

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

Insert data into Stu_Table

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

 Stu_Table

Stu_Id Stu_Name
1 Komal
2 Ajay
3 Rakesh
4 Bhanu
5 Santosh

SQL Add Column Syntax

The ALTER Table is used to modify table name 'table_name' and add a column at the specific position. The first column specify the position of the column to be come first in table followed by a after column in a table. The Syntax is given as : 

ALTER TABLE table_name
ADD column_name column-definition [ FIRST | AFTER col_name ]

SQL Add Colum Query

The SQL Add Column Query add a Stu_Name column followed by Stu_Name in the Table Stu_Table.

Alter Table Stu_Table add Stu_Class int(10) AFTER Stu_Name

View data  Stu_Table

Stu_Id Stu_Name Stu_Class
1 Komal NULL
2 Ajay NULL
3 Rakesh NULL
4 Bhanu NULL
5 Santosh NULL

 

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Posted on: December 20, 2008

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Comments:5
karthikeyanS
June 23, 2011
how to insert column between two column

how to insert column between two column and how to validate before insert the value in table
Din
August 16, 2011
Column Position

ALTER TABLE table_name ADD column_name column-definition [ FIRST | AFTER col_name ] It is not working that is false in sql 2005
broncha
April 10, 2012
this only works on mysql

this only works on mysql
tim
September 18, 2012
both syntax wrong

u cant use integer with width and alter cant b used like that.remove the post
abhishek bahuguna
September 20, 2012
add constraint at a specified position

not possible in sql u cannot use after i before keyword in sql it is used in mysql not in sql
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