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Not selecting the Top 10 from the VBA/SQL Statement

Posted on 2011-03-21
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Last Modified: 2012-05-11
I have some VBA Code that is doing a Select TOP statement, where it takes the TOP number from a number that the user is prompt for on a form.

For some reason, it is selecting all the records not just the TOP 10.

I have included the VBA Code in the Code section.

Can someone please tell me what the issue might be?

Thanks,

gdunn
Private Sub cmdAssign_Click()
Dim db As DAO.Database
Dim qdf As DAO.QueryDef
Dim lngTop As Long
Dim strSQL As String
 
 
Set db = CurrentDb
db.QueryDefs.Delete "qryWorkAssigned"
Set qdf = db.CreateQueryDef("qryWorkAssigned")
lngTop = CLng(InputBox("Enter Amount to Assign"))
strSQL = "SELECT TOP " & lngTop & " numDay, numDay, txtAssignedTo, txtAssignedBy, dtmDateAssigned, numID, txtPmtTyp, txtSuff FROM [qryUnPro] ORDER BY numID"
 
qdf.SQL = strSQL
 
DoCmd.RunSQL "UPDATE qryWorkAssigned SET qryWorkAssigned.txtAssignedBy = [Enter Your User ID], qryWorkAssigned.txtAssignedTo = [Enter User ID Being Assigned], qryWorkAssigned.dtmDateAssigned = [Enter Today's Date]"
 
'Refresh MAPD Form
[Form_frmUnproUnassignedsubform].Requery
 
End Sub

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Question by:gdunn59
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16 Comments
 
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Expert Comment

by:Aaron Tomosky
ID: 35186490
I think it's because the input is a string so it wraps it in quotes when it just needs a straight number.
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LVL 75
ID: 35186592
"when it just needs a straight number."
It's converted in the line of code above >> lngTop = CLng(InputBox("Enter Amount to Assign"))

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LVL 75
ID: 35186610
Have you looked at query qryWorkAssigned once it has been created directly in the query designer and checked how many records are return .... ?
You can do that by commenting out everything after

qdf.SQL = strSQL
 
mx
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Expert Comment

by:Nick67
ID: 35192258
Throw a msgbox right after this line

strSQL = "SELECT TOP " & lngTop & " numDay, numDay, txtAssignedTo, txtAssignedBy, dtmDateAssigned, numID, txtPmtTyp, txtSuff FROM [qryUnPro] ORDER BY numID"

Msgbox strSQL

What is strSQL?  are there quotes or other nonsense in it?

If not, simplify first.
Try the code below.
Sub out the * and start adding in fields.

Something about TOP and Order by is tickling my spider sense, though
Dim db As DAO.Database
Dim rs As Recordset
Dim lngTop As Long
Dim strSQL As String
 
Set db = CurrentDb
lngTop = CLng(InputBox("Enter Amount to Assign"))
strSQL = "SELECT TOP " & lngTop & " *  from qryUnPro;"
Set rs = db.OpenRecordset(strSQL, dbOpenDynaset, dbSeeChanges)
rs.MoveLast
MsgBox rs.RecordCount

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Author Comment

by:gdunn59
ID: 35194541
Nick67:

You're correct in saying that something about the Order by is tickling your spider sense.  So before I did anything out, I commented out the Order by clause, and then it worked like a charm.  Go figure!

Is there anyway around this?  So I can still sort?

Thanks,
gdunn59
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Author Comment

by:gdunn59
ID: 35194543
Oops, meant to say "before I did anything else", not "out".
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Expert Comment

by:Nick67
ID: 35194618
You temptable it

select * from ( "select top x from tblWhatever") order by some column
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Expert Comment

by:Nick67
ID: 35194625

"select * from ( ELECT TOP " & lngTop & " numDay, numDay, txtAssignedTo, txtAssignedBy, dtmDateAssigned, numID, txtPmtTyp, txtSuff FROM [qryUnPro] ) as temptable ORDER BY numID"
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Expert Comment

by:Nick67
ID: 35194630
Well, you get the idea
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LVL 75
ID: 35194658
You never answered the question I asked above:

"Have you looked at query qryWorkAssigned once it has been created directly in the query designer and checked how many records are returned .... ?
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Author Comment

by:gdunn59
ID: 35194764
DatabaseMX:

Sorry, yes I did and it is not just doing the Top number entered.

Based off of what Nick67 was saying, I commented out the "Order by" clause and it worked like a charm after that.

Thanks,

gdunn59
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LVL 75
ID: 35194772
Orderby should not affect this.
Are you saying the actual query does the same thing?
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LVL 26

Accepted Solution

by:
Nick67 earned 250 total points
ID: 35194938
The spidey sense was going.
Order by shouldn't do that..but it does sometimes... I think just in Access, not in sprocs

http://bytes.com/topic/access/answers/678509-select-top-order
http://www.mrexcel.com/forum/showthread.php?t=496073

I've had it happen, I can't remember where, hence the spidey sense.
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LVL 75
ID: 35194967
".but it does sometimes"
Well ... it works like this - from Help:

"Typically, you use the TopValues property setting together with sorted fields. The field you want to display top values for should be the leftmost field that has the Sort box selected in the query design grid. An ascending sort returns the bottommost records, and a descending sort returns the topmost records. If you specify that a specific number of records be returned, all records with values that match the value in the last record are also returned."

So ... unless you have duplicates in the Field that is being sorted, then you should only get the TOP amount of records - certainly not All.

mx
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Expert Comment

by:Nick67
ID: 35199328
Bugs do happen.
And as @gdunn59 noted
"SELECT TOP " & lngTop & " numDay, numDay, txtAssignedTo, txtAssignedBy, dtmDateAssigned, numID, txtPmtTyp, txtSuff FROM [qryUnPro] ORDER BY numID"
returns all the records, not the top X
"SELECT TOP " & lngTop & " numDay, numDay, txtAssignedTo, txtAssignedBy, dtmDateAssigned, numID, txtPmtTyp, txtSuff FROM [qryUnPro]"
returns the top X and not sorted.

Why?

I can't say.
I've had it happen, but it was quite some time ago.
Most times it doesn't matter.
You can force a report or a form to sort regardless of the underlying query's order, so then it doesn't matter.
If your doing recordset work, or combo boxes and list boxes it can be a pain.

But it happens.

It isn't the first bug that's been encountered, and it won't be the last.
FWIW, my backend is now SSEE 2005 -- and I can't replicate the problem anymore.
But I remember having it :)
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Expert Comment

by:Aaron Tomosky
ID: 35199369
Try doing a nested select. So select top 10 from (allyourstuff) order by numid
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