I have been having trouble with using "Between" in my criteria. Basically I have a [ARR] time and I am determining if the time fits between a [Start] time and a [5 Minute] time. Basically the [Start] and [5 Minute] times come from a table with every possibility between 0:00 and 23:59. My field is [ARR] and my criteria is: Between [TimeTable].[Start] And [TimeTable].[5 Minute]. So if the [ARR] time was 9:40 the following should be returned.

ARR Start 5 Minute
9:40 9:35 9:40
9:40 9:36 9:41
9:40 9:37 9:42
9:40 9:38 9:43
9:40 9:39 9:44
9:40 9:40 9:45

Basically each time should return 6 entries. However, what is returned is not consistent. For example, the return for the 9:40 [ARR] only shows 5 entries (it doesn't show 9:40-9:45 Start and 5 Minute). While another [ARR] time may not show the beginning time slot. I have tried to figure this out for a while now and don't have anything. PLEASE, anything would be appreciated! :)

Are you using the correct delimiter with your query or VBA code? For Example:

"SELECT [AAR] FROM TimeTable WHERE [AAR] Between #" & [Start] & "# And #" & [5 Minute] & "#;"


Greg Serrano
Michigan Dept. of Environmental Quality, Air Quality Division

Thanks for your response! I tried typing in the following in my Criteria:

"SELECT [ARR] FROM TimeTable WHERE [ARR] Between #" & [Start] & "# And #" & [5 Minute] & "#;"

This returned the following prompt when I tried: Type mismatch in expression. I am not very familiar with this so I am not sure how to fix it.

What that error is saying is that some or all of the three fields (ARR, Start, and 5 Minute) are all not of the datatype of Date/Time. They should all be Date/Time for the statement to work. If any are strings, for example, you cannot compare date/times to string and the # delimiter will be incorrect.


Greg Serrano
Michigan Dept. of Environmental Quality, Air Quality Division

Hmm, I see. Well all the fields are in the Date/Time format when I check the original tables, so I can't see why that would be the issue.

OK, then the next question is are any of the them NULL or have no value? That is do you have any data left out? If Start or 5 Minute are null (have no data) then that will also cause the statement to fail. To compensate for that situation, try

"SELECT [AAR] FROM TimeTable WHERE [AAR] Between #" & Nz([Start], [Some Default Value for Start Here]) & "# And #" & Nz([5 Minute], [Some Default Value for 5 Minute Here]) & "#;"

The function Nz(X, Y) replaces a null/missing value with a default value. So if A = Nz(X, Y), then A = X if X is not missing, or A = Y if X is missing.

Note: if the five-minute value is always five mintues from start, don't store that in a field in a table. It bloats your dB size and violates dB rules. Just calculate it when you need it.

"SELECT [AAR] FROM TimeTable WHERE [AAR] Between #" & Nz([Start], [Some Default Value for Start Here]) & "# And #" & DateAdd("n", 5, Nz([Start], [Some Default Value for Start Here])) & "#;"

In that case [5 Minute] was replaced by the calculation DateAdd("n", 5, Nz([Start], [Some Default Value for Start Here]).

Check help for Nz() and DateAdd() for more details.


Greg Serrano
Michigan Dept. of Environmental Quality, Air Quality Division