SQL Aggregate Functions Group By

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SQL Aggregate Functions Group By

SQL Aggregate Functions Group By

     

SQL Aggregate Functions Group By return the aggregate functions (like SUM) of the different numeric field for each individual group of column values.

Understand with Example

The Tutorial grasp you with the use of 'SQL Aggregate Functions Group By'. In this example, we create a table 'Stu_Table'. The create table statement create a table 'Stu_Table'  

Create Table Stu_Table

 

 

 

create table Stu_Table(Stu_Id varchar(2), Stu_Name varchar(15), 
Stu_Class varchar(10),sub1 integer(2),sub2 integer(2),
sub3 integer(2),sub4 integer(2),sub5 integer(2));

Insert Value Into Stu_Table

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

insert into Stu_Table values(1, 'Komal', 10, 23, 34, 45, 56, 67);
insert into Stu_Table values(2, 'Ajay', 10, 34, 45, 56, 67, 78);
insert into Stu_Table values(3, 'Rakesh', 10, 23, 43, 45, 45, 34);
insert into Stu_Table values(4, 'Bhanu', 10, 56, 45, 67, 34, 54);
insert into Stu_Table values(5, 'Santosh', 10, 56, 67, 56, 67, 56);
insert into Stu_Table values(6, 'Tanuj', 10, 56, 45, 56, 56, 45);

Stu_Table

+--------+----------+-----------+------+------+------+------+------+
| Stu_Id | Stu_Name | Stu_Class | sub1 | sub2 | sub3 | sub4 | sub5 |
+--------+----------+-----------+------+------+------+------+------+
| 1      | Komal    | 10        | 23   | 34   | 45   | 56   | 67   |
| 2      | Ajay     | 10        | 34   | 45   | 56   | 67   | 78   |
| 3      | Rakesh   | 10        | 23   | 43   | 45   | 45   | 34   |
| 4      | Bhanu    | 10        | 56   | 45   | 67   | 34   | 54   |
| 5      | Santosh  | 10        | 56   | 67   | 56   | 67   | 56   |
| 6      | Tanuj    | 10        | 56   | 45   | 56   | 56   | 45   |
+--------+----------+-----------+------+------+------+------+------+

Query

The given below Query returns you the records enlisted in select statement and sum of different numeric field for each individual group of column values in the table 'Stu_Table'.

select stu_id, stu_name, sub1, sub2, sub3, sub4, sub5,
sum( sub1 + sub2 + sub3 + sub4 + sub5) as total 
from stu_table group by stu_id;

Result 

+--------+----------+------+------+------+------+------+-------+
| stu_id | stu_name | sub1 | sub2 | sub3 | sub4 | sub5 | total |
+--------+----------+------+------+------+------+------+-------+
| 1      | Komal    | 23   | 34   | 45   | 56   | 67   | 225   |
| 2      | Ajay     | 34   | 45   | 56   | 67   | 78   | 280   |
| 3      | Rakesh   | 23   | 43   | 45   | 45   | 34   | 190   |
| 4      | Bhanu    | 56   | 45   | 67   | 34   | 54   | 256   |
| 5      | Santosh  | 56   | 67   | 56   | 67   | 56   | 302   |
| 6      | Tanuj    | 56   | 45   | 56   | 56   | 45   | 258   |
+--------+----------+------+------+------+------+------+-------+

Tutorials

  1. Quartz Tutorial
  2. Introduction to Quartz Scheduler
  3. Download Quartz Job Scheduler
  4. Hello World Quartz Scheduler
  5. Jobs & Triggers
  6. More About Triggers
  7. More About Simple Trigger
  8. More About the CronTrigger
  9. Example of Cron Trigger
  10. Implementing more than one Job Details and Triggers
  11. Scheduler Shutdown Example
  12. TriggerListeners and JobListeners
  13. JobStores
  14. Configuration, Resource Usage and StdSchedulerFactory
  15. Establish a Connection with MySQL Database
  16. Advance (Enterprise) Features
  17. Quartz Tutorial
  18. Aggregate Functions in SQL, SQL Tutorial
  19. Backup File With Separator
  20. Backup Into txt File
  21. Backup selected records into txt file
  22. Call Procedure
  23. Close Cursors in SQL
  24. Create After Insert Trigger in SQL
  25. Create Before Insert Trigger in SQL
  26. Create Before Update Trigger in SQL
  27. Create Delete Trigger in SQL
  28. Create a Simple Procedure
  29. Create After Update Trigger in SQL
  30. Create Database in SQL,SQL Tutorial
  31. Creating Cursors in SQL
  32. Declare Cursors in SQL
  33. The DELETE Statement, SQL Tutorial
  34. SQL SELECT DISTINCT Statement
  35. Drop Index
  36. Drop Table
  37. Close Cursors in SQL
  38. Use HANDLER Statement in Cursors
  39. Insert Data From File
  40. The INSERT INTO Statement, SQL Tutorial