Aggregate Functions
In this section we are going to illustrate aggregate function, with the help of
which we can use many arithmetic operation like average, count, maximum and many
more in SQL. They are briefly described and denoted by the keyword in the given
below section.
AVG
COUNT
MAX
MIN
SUM
For all of the above given function the standard code
syntax will be:
| SELECT "function type"
("column_name") FROM "table_name" |
For example we just take a Employee table and use the aggregate function SUM on the field "Salary" to
find out the total salary of the Employee table.
Table Employee:
| emp_Name |
Salery |
Joining_Date |
| Amit |
15000 |
Feb-05-2005 |
| Chandan |
25000 |
Feb-17-2005 |
| Ravi |
8000 |
Feb-25-2005 |
| Vinod |
7000 |
Feb-28-2005 |
To find out the total
salary of the company's employee we should write the following code:
| SELECT SUM (Salary) FROM Employee; |
When we run the above query we will get the following
result:
|
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Current Comments
1 comments so far (post your own) View All Comments Latest 10 Comments:I need statement in sql select All db name ,sql2005
and statement select all table name in db ,
and statment select the pk in table
Posted by zead qunes on Friday, 01.4.08 @ 04:14am | #44466