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



Home Quartz SQL Aggregate Concatenate

Related Tutorials


 
 

Share on Google+Share on Google+

SQL Aggregate Concatenate

Advertisement
This page discusses - SQL Aggregate Concatenate

SQL Aggregate Concatenate

     

 

SQL Aggregate Concatenate provides you a concatenated record of the  field based on the conditional operator WHERE clause.

 Understand with Example

The Tutorial illustrate an example from SQL Aggregate Concatenate. To grasp this example, we create a table 'Stu_Table' using create table statement. 

Create Table Stu_Table

 

 

 

create table Stu_Table(Stu_Id varchar(2), Stu_Name varchar(15), 
Stu_Class  varchar(10),sub_id varchar(2),marks varchar(3));

Insert Data into Stu_Table

The insert into statement add the records or rows to the table 'Stu_Table'.

insert into Stu_Table values(1,'Komal',10,1,45);
insert into Stu_Table values(2,'Ajay',10,1,56);
insert into Stu_Table values(3,'Rakesh',10,1,67);
insert into Stu_Table values(1,'Komal',10,2,47);
insert into Stu_Table values(2,'Ajay',10,2,53);
insert into Stu_Table values(3,'Rakesh',10,2,57);
insert into Stu_Table values(1,'Komal',10,3,45);
insert into Stu_Table values(2,'Ajay',10,3,56);
insert into Stu_Table values(3,'Rakesh',10,3,67);
insert into Stu_Table values(1,'Komal',10,4,65);
insert into Stu_Table values(2,'Ajay',10,4,56);
insert into Stu_Table values(3,'Rakesh',10,4,37);
insert into Stu_Table values(1,'Komal',10,5,65);
insert into Stu_Table values(2,'Ajay',10,5,46);
insert into Stu_Table values(3,'Rakesh',10,5,63);

Stu_Table

+--------+----------+-----------+--------+-------+
| Stu_Id | Stu_Name | Stu_Class | sub_id | marks |
+--------+----------+-----------+--------+-------+
| 1      | Komal    | 10        | 1      | 45    |
| 2      | Ajay     | 10        | 1      | 56    |
| 3      | Rakesh   | 10        | 1      | 67    |
| 1      | Komal    | 10        | 2      | 47    |
| 2      | Ajay     | 10        | 2      | 53    |
| 3      | Rakesh   | 10        | 2      | 57    |
| 1      | Komal    | 10        | 3      | 45    |
| 2      | Ajay     | 10        | 3      | 56    |
| 3      | Rakesh   | 10        | 3      | 67    |
| 1      | Komal    | 10        | 4      | 65    |
| 2      | Ajay     | 10        | 4      | 56    |
| 3      | Rakesh   | 10        | 4      | 37    |
| 1      | Komal    | 10        | 5      | 65    |
| 2      | Ajay     | 10        | 5      | 46    |
| 3      | Rakesh   | 10        | 5      | 63    |
+--------+----------+-----------+--------+-------+

Query

The Query return you a records and concatenated values from the field 'marks' from table 'Stu_table'. The group by return the group records from a table 'Stu_Table'.

select stu_id,stu_name,GROUP_CONCAT(marks) 
as marks from stu_table group by stu_id;

Result

+--------+----------+----------------+
| stu_id | stu_name | marks          |
+--------+----------+----------------+
| 1      | Komal    | 45,65,47,65,45 |
| 2      | Ajay     | 46,56,56,53,56 |
| 3      | Rakesh   | 67,57,37,67,63 |
+--------+----------+----------------+
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 Aggregate Concatenate  

Post your Comment


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