Access database and date errors

Posted on 2004-09-15
Last Modified: 2010-05-02
I have an access database where my application stores dates in the dutch notation:


but when i run aq sql query with between 01-07-2004 and 01-08-2004 it returns nothing, when i enter these dates: 07-01-2004 and 08-01-2004 it works fine.

But somehow not when i do this in my application.
Question by:markyvt
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LVL 76

Expert Comment

ID: 12064040
Your dates are not stored in Dutch notation, they are displayed like that.
You have to specify get the correct date into the SQL. The easiest way to do that is #07/01/2004#. This notation only takes the American fomat.
LVL 44

Expert Comment

ID: 12064253
It is VERY importatn to understand how date values are actuyally stored in the database.  They are NOT stored as "mm-dd-yyyy" or as "dd-mm-yyyy" or even asn "yyyy-dd-mm".

Rather, Date type values are stored internally as  Numbers (of type DOUBLE), which have a Decimal point.  The integer part of the number (to the LEFT of the decimal point) is the NUMBER of days since Dec 30, 1899.  The fractional part (to the right of the decimal pont) holds the TIME of day as measured in seconds since midnight, as a fraction of 1 day (1 day = 86400 seconds)

so right now (Sept 15, 2004 at 9:16:46 AM Eastern Daylight Time) the value of the number would be:


that means that Sept 15, 2004 is 38245 days since dec 30, 1899

and 9:16:46 AM is .386651  of 1 day( = 33406 seconds since midnight)

How the data is DISPLAYED is up to you, and by default, Access uses US formatting.


Expert Comment

ID: 12064329
use query like this

select * from [Sample Table] where record_date between #1/1/2000# and #1/1/2001#

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Author Comment

ID: 12331956
when i use #1/1/2004# till: #8/1/2004# it does 1 jan untill 8 jan and not 1 jan until 1 august.

How can i solve this ?

Author Comment

ID: 12559858
Well the question is just half answered i still have this issue:

when i use #1/1/2004# till: #8/1/2004# it does 1 jan untill 8 jan and not 1 jan until 1 august.

How can i solve this ?
LVL 44

Accepted Solution

Arthur_Wood earned 500 total points
ID: 12561660
try this:

DateSerial(2004,1,1) tilL: DateSerial(2004,8,1)

it sounds like you have your regional settings set as DD/MM/YYYY (European) and you expect them to be MM/DD/YYYY (American)


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