DataDiff & DateAdd

[Harrild]

How do you implement the DateDiff and DateAdd commands in Access 97?

[Ianpbaker]

Hi Harrild

Do you mean in VBA for access or in SQL

Ian

[Harrild]

A SQL would be good plz...

[Ianpbaker]

Try this for size

SELECT DATEDIFF(day, date1, column1) AS no_of_days
FROM table1

[Harrild]

Ok its a start but i want the date fidd between todays date and the one in the column...

[Ianpbaker]

Hi

In that case use

SELECT DATEDIFF(day, getDate(), column1) AS no_of_days
FROM table1

[Harrild]

huh?
I still have no idea on how to use it.....what are 'day', 'getdate()' and 'column1'?

[Ianpbaker]

Hi harry

Sorry about he delay in reurning bit iv'e been away for the weekend

The datediff function returns the difference in the specified format between two dates. Datediff(datepart,date1,date2). SO in the example I gave you it would return a column called no_of_days consisting of the number of days between today (getdate()) and whatever date that would be in column1.

Ian

[Harrild]

And where do i enter that then?

[Harrild]

in VBA please

[Ianpbaker]

Do You mean you want to check a date in VBA, or you want to return Something in a recordset using the datediff in SQL?

Ian

[Harrild]

i got DateAddn in VBA for a form and i want the DateDiff in VBA so i can use it with a form

[Ianpbaker]

In VBA,
all you need to do is the following

Dim intDifferenceinDays as integer

intDifferenceinDays = DateDiff("d",now(),somedate)

That will return the difference in days between today(now()) And what ever date you put in the second part.

Hope this helps

Ian

[Harrild]

could i out
intDifferenceinDays = DateDiff("d",now(), columname)

cos the diff is from todays date and the other column's date, which in turn gets its value from another column using DateAdd

[Ianpbaker]

What do you mean by could i out ?

[Harrild]

sorry i meant 'put'

[Ianpbaker]

Yes you can

There is no reason wht you can't put a DateAdd inside a DateDiff

Ian

[Harrild]

maybe you missunderstood

can i put a column name in place of somedate()?

[Ianpbaker]

Yes you can

intDifferenceinDays = DateDiff("d",now(), myrecordset("Mydatecolumn"))

Ian

[Harrild]

thanks i let you know how it goes in about 12-24hrs cos the DB is at school at the mo