How to select monthly data in vb.net from Access Database

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Hello,how to select monthly data from a table contains data for long time,
for example
field1 = date1
field2 = degree

how to get the max degree for each months (jan,feb...)for certain year and view it in one table.

Posted 20-May-14 0:52am

Eman Ayad

Updated 9-Jun-14 19:46pm

v3

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DamithSL · Answer 1 · 2014-05-20T01:11:00

Solution 1

try like below

SQL

select max(degree), Format(date1, "mmm")
from table1
group by Format(date1, "mmm")

Posted 20-May-14 1:11am

DamithSL

Updated 10-Jun-14 5:33am

v2

Comments

Eman Ayad 5-Jun-14 3:34am

an error message says undefined (DATENAME),
I used Access database

Sergey Vaselenko 10-Jun-14 10:23am

Try to use MonthName(Month(date1), TRUE) instead of DATENAME(MONTH, date1).

DamithSL 10-Jun-14 11:33am

check my updated answer

Sergey Vaselenko · Answer 2 · 2014-05-20T05:06:00

Solution 2

SQL

SELECT
    DATEADD(month, DATEDIFF(month, 0, t.Date1), 0) AS Date1
    , MAX(degree) AS MaxDegree
FROM
    table1 t
WHERE
    YEAR(t.Date1) IN (2014)
GROUP BY
    DATEADD(month, DATEDIFF(month, 0, t.Date1), 0)

Posted 20-May-14 5:06am

Sergey Vaselenko

Comments

Eman Ayad 5-Jun-14 3:43am

it seems that these functions haven't defined is there another way?
I am using vb.net and Access

Kschuler 10-Jun-14 10:04am

These guys gave you the basic syntax. If you need the specific function that Access uses, then you should try googling it. I found this link which may help.
http://www.techonthenet.com/access/functions/date/format.php