Thursday, November 18, 2010

SQL LAST() Function

SQL LAST() Function

The LAST() Function

The LAST() function returns the last value of the selected column.

SQL LAST() Syntax

SELECT LAST(column_name) FROM table_name


SQL LAST() Example

We have the following "Orders" table:
O_Id
OrderDate
OrderPrice
Customer
1
2008/11/12
1000
Hansen
2
2008/10/23
1600
Nilsen
3
2008/09/02
700
Hansen
4
2008/09/03
300
Hansen
5
2008/08/30
2000
Jensen
6
2008/10/04
100
Nilsen


Now we want to find the last value of the "OrderPrice" column.


We use the following SQL statement:


SELECT LAST(OrderPrice) AS LastOrderPrice FROM Orders




 Tip: Workaround if LAST() function is not supported:


SELECT OrderPrice FROM Orders ORDER BY O_Id DESC LIMIT 1


The result-set will look like this:


LastOrderPrice
100

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