The Tutorial helps you to understand an example from 'SQL Add Column Position' in Mysql. To understand and grasp the example we simply create a table 'Stu_Table' with required fieldnames and datatypes respectively.
Understand with Example
The Tutorial illustrate an example from 'SQL Add Column Position'.To understand and grasp this example we create a table 'Stu_Table' with required fieldname and datatypes respectively.
Create Table Stu_Table
create table Stu_Table(Stu_Id integer(2), Stu_Name varchar(15)); |
Insert data into Stu_Table
The insert into adds the records or rows to the table '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 the definition of table and add the columns to the table in order.
ALTER TABLE table_name ADD column_name column-definition [ FIRST | AFTER col_name ] |
SQL Add Column Query
The below Query is used to redefine the table 'Stu_Table' and add the column Stu_Name followed by the sequence Stu_Class.
Alter Table Stu_Table add Stu_Class int(10) AFTER Stu_Name |
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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