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 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 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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