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Microsoft Access 2013 Subform frmemployeehistory makes form slow to open

Posted on 2015-01-08
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Last Modified: 2015-01-09
I have a form to track time. Client wants to see the history of the users data when they open frmtimesheet. I am not sure if there is any answer to this question but I am trying to make it faster. frmemployeehistory has a query queryqrysubrequesttime behind it. The subform must allow the user to be able to delete records from it. When I take this form out I can load the form in 2 seconds but with the history it takes 10 seconds even if there are no records. Any thoughts on how I can speed this form up?
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Question by:marlind605
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Expert Comment

by:PatHartman
ID: 40538926
you can try changing the RecordSource query for the subform to reference the main form to select the Employee ID and then remove the master/child links.

Where EmpID = Forms!frmEmployee!txtEmpID
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Author Comment

by:marlind605
ID: 40538974
I already do this. Even if there are no records it takes 10 seconds to display the form. In practice I am not sure how often an employee has no records. I had thought of checking for the records and opening a different form up if there are no records but that would only help if they didn't have any records.
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Author Comment

by:marlind605
ID: 40539014
Interesting  I can pull up all the records in 3.94 seconds. The owner of the database wanted the employees to see all their activity for that day. At the same time if the employee needs to add time for a previous time the database shows the record for that previous time until the employee exits the form so I created a subform to show the previously used date. Maybe I need to show the SQL. Let me work on that.
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Expert Comment

by:PatHartman
ID: 40539018
Seeing the query might help.
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Author Comment

by:marlind605
ID: 40539263
SELECT qryhourmin.[The Minutes], qryhourmin.[Added by], DatePart("m",[Starttime]) & "/" & DatePart("d",[StartTime]) & "/" & DatePart("yyyy",[Starttime]) AS Dateselect, qryhourmin.RequestNumber, qryhourmin.Starttime, qryhourmin.EventID, qryhourmin.EmpName, qryhourmin.dateindbtl, qryhourmin.Requester, qryhourmin.VisReqNum, Format([DateReq],"mm/dd/yy") AS Mydate, qryhourmin.Stoptime, qryhourmin.ActualTime, qryhourmin.Minutes, qryhourmin.DBrequestersdetails, qryhourmin.worktype, qryhourmin.WorkCodeID, qryhourmin.DescriptionDBID, qryhourmin.Description, qryhourmin.WorkCode, tblsystemnotes.SystemText, qryhourmin.systemnotesid, qryhourmin.Sel, qryhourmin.Dateofentry, qryhourmin.eod, qryhourmin.ActualTime AS Xtime
FROM tblsystemnotes RIGHT JOIN qryhourmin ON tblsystemnotes.systemnotesid = qryhourmin.systemnotesid
WHERE (((DatePart("m",[Starttime]) & "/" & DatePart("d",[StartTime]) & "/" & DatePart("yyyy",[Starttime]))=[Forms]![frmtimesheet]![txtselstartdate]) AND ((qryhourmin.EmpName)=networkusername())) OR (((qryhourmin.EmpName)=networkusername()) AND ((qryhourmin.Dateofentry)=[Forms]![frmtimesheet]![txtselstartdate]))
ORDER BY qryhourmin.EventID, qryhourmin.Starttime;

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The only way I got my date to work was to construct it the way I did. Any suggestions?
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Author Comment

by:marlind605
ID: 40540090
SELECT Last(tblemployeeactivity.Dateofactivity) AS LastOfDateofactivity, Last(tblemployeeactivity.DateHistory) AS MYDate
FROM tblemployeeactivity
GROUP BY tblemployeeactivity.EmpName
HAVING (((tblemployeeactivity.EmpName)=networkusername()));

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I create a log for employees when they go to the time sheet log. MYDATE is where [Forms]![frmtimesheet]![txtselstartdate] comes from. LIke I say the it takes 10 seconds for the records to pull up. Trying to shorten that time.  Will Dlookup work faster I could never get that to work.
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Author Comment

by:marlind605
ID: 40540191
I am testing Dlookup with this in the control field =DLookUp([MYDate],[qrynetworklast]). I get the #Name? displayed in the box. Can someone help me correct this. I would like to see if this is faster then my subform.
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Accepted Solution

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PatHartman earned 500 total points
ID: 40540214
Use left joins rather than DLookup() wherever possible.
The problem is that the control used to be bound and its name was "mydate".  Now that it is unbound, it cannot have the name of a bound field.  Change the Name property of the control to be different from the name of any field in the form's RecordSource.

Sounds like StartTime has both date and time.  Breaking it apart as you are doing in the Where clause could prevent the query engine from using an index.  A different way to accomplish this is with:

WHERE (([Starttime] >= [Forms]![frmtimesheet]![txtselstartdate]  AND < [Forms]![frmtimesheet]![txtselstartdate] + 1) OR qryhourmin.Dateofentry  = [Forms]![frmtimesheet]![txtselstartdate])
AND qryhourmin.EmpName = networkusername();

I also see that you have a function in the where clause.  Get rid of it.  Look up the user name on the form and put it in a form field so the query engine doesn't have to resolve it.
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Author Comment

by:marlind605
ID: 40540245
Thanks Pathartman. Let me try that.
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Author Closing Comment

by:marlind605
ID: 40541283
Thank you very much. Your solution reduced the time for the form to open from 11 seconds to 3 seconds. I really appreciate the help.
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LVL 34

Expert Comment

by:PatHartman
ID: 40541330
Excellent.
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