Run query after a certain time has passed

[ramdayal9]

Hi, im new here!
How can i run a query after a certain time has passed? I want to run a delete query to run 2 days after the data has been archived. I have created an append query which archives the data and records the date when it was archived.

Can any1 help me?

Thanks

[missinglinq]

A strategy in very broad strokes:

Have a table with a date or date/time field in it, depending on how accurate you want to be.

When you run the Append Query to archive your data, write the date or date/time to this field.

In the Form_Load event of a form you generally run first thing on opening your db, compare the stored date or date/time with the current date or date/time.

If the difference is => 48 hours run the Delete Query

Reset the stored date to Null

An alternate method would be to have a form load but be invisible and use the Timer event of the form to do the above. Be aware, however, that the Timer running for extended periods can sometimes be problematical, sometimes causing screen flickering and other things!

Good Luck!

[ADezii]

Hi, im new here!
How can i run a query after a certain time has passed? I want to run a delete query to run 2 days after the data has been archived. I have created an append query which archives the data and records the date when it was archived.

Can any1 help me?

Thanks

As soon as your data is archived, write this Date to the System Registry:

SaveSetting "Archive Date", "Date Archived", "Date", Date

Prior to opening your Query, run this code to determine if it was at least 2 days since it was archived.

Dim dteArchivedDate As Date
 
dteArchivedDate = GetSetting("Archive Date", "Date Archived", "Date")
 
If DateDiff("d", dteArchivedDate, Now()) >= 2 Then
  'Open your Query
Else
  MsgBox "Too early to run Query", vbExclamation, "Too Early"
End If

[ramdayal9]

A strategy in very broad strokes:

Have a table with a date or date/time field in it, depending on how accurate you want to be.

When you run the Append Query to archive your data, write the date or date/time to this field.

In the Form_Load event of a form you generally run first thing on opening your db, compare the stored date or date/time with the current date or date/time.

If the difference is => 48 hours run the Delete Query

Reset the stored date to Null

An alternate method would be to have a form load but be invisible and use the Timer event of the form to do the above. Be aware, however, that the Timer running for extended periods can sometimes be problematical, sometimes causing screen flickering and other things!

Good Luck!

How do i do it so that it compares the stored date and the current date. Do i use VB? if so what is the code?

Thanks

[NeoPa]

We generally try to avoid doing the work for you in here. In short though, the current date is returned in the function Date(). If you want to post a stab at the SQL then we can help with that. Without table MetaData we couldn't give you much now anyway.
Here is an example of how to post table MetaData :
Table Name=tblStudent

Field; Type; IndexInfo
StudentID; AutoNumber; PK
Family; String; FK
Name; String
University; String; FK
Mark; Numeric
LastAttendance; Date/Time