Question

I have a table in Access in a custom format saved as dd/MM/yyyy hh:mm:ss tt , Also A form in VB.NET 2010, I get a specific day, month and year with no problem but the problem comes when I want to query the sum of a column named value depending on a specific month or day or year….

The table is like:

+-----+-----------+-------------------------+
| id  |     value |       date              |
+-----+-----------+-------------------------+
| id1 |      1499 | 01/01/2012 07:30:11 p.m.|
| id2 |      1509 | 11/02/2012 07:30:11 p.m.|
| id3 |      1611 | 21/10/2012 07:30:11 p.m.|
| id1 |      1115 | 11/10/2012 07:30:11 p.m.|
| id1 |      1499 | 17/05/2012 07:30:11 p.m.|
| id2 |      1709 | 11/06/2012 07:30:11 p.m.|
| id3 |      1911 | 30/07/2012 07:30:11 p.m.|
| id1 |      1015 | 01/08/2012 07:30:11 p.m.|
| id1 |      1000 | 11/05/2012 07:30:11 p.m.|
|+-----+-----------+------------------------+

So I Know the query

SELECT SUM(value) FROM mytable WHERE date in='01/05/2012 00:00:00' …

How to tell the query I want the month of May so I would get 1499+1000= 2499

Or how to tell I want the year 2012 so I would get the sum of all the table

Which would be the correct syntax…

Answer 1

It’s not standard SQL, but if you’re using Access this should always work:

 SELECT SUM([Value]) FROM Mytable WHERE Year([Date])=2012 and Month([Date])=5

or this, if you just want to filter the year:

 SELECT SUM([Value]) FROM Mytable WHERE Year([Date])=2012