Question

Arithmetic overflow error converting expression to data type datetime

Asked by: Millkind

I have a piece that sends out bday cards to patrons based on the data in a sql database.  It has worked fine for several years.  On july 30 it started giving the following error message:
System.Data.SqlClient.SqlException: Arithmetic overflow error converting expression to data type datetime.
   at System.Data.SqlClient.SqlDataReader.Read()
   at System.Data.Common.DbDataAdapter.FillLoadDataRow(SchemaMapping mapping)
   at System.Data.Common.DbDataAdapter.FillFromReader(Object data, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue)
   at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords)
   at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
   at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
   at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet)

I have not changed the software and the data has not changed.  The following is the sql select statement that is causing the error.

SELECT     achDateOfBirth, achEmail, achName, lMealPlan
FROM         tblStudent
WHERE     (DATEPART(MM, achDateOfBirth) = DATEPART(mm, @sdate)) AND (LEN(achEmail) > 1) AND (DATEPART(dd, achDateOfBirth) = DATEPART(dd, @sdate))
                      AND (NOT (achDateOfBirth = N'1/1/1900'))

It is SQL Server 2000/2003
The last udate for the server stuff was jly 15, 2009, but there was an update for IE explorer on 7/30/2009

Private Function studentbirthdays()
        Try
            bdaycomman.Parameters("@sdate").Value = alldater 'alldater is date.today
            Bdayds1.Clear()
            bday.Fill(Bdayds1) 'casues error
            For Each ds As DataRow In Bdayds1.Tables(1).Rows
                olApp = New Outlook.Application
                olMail = olApp.CreateItem(Outlook.OlItemType.olMailItem)
                If InStr(ds.Item(1), "gettysburg") Then
                    'olMail.To = ds.Item(1)
                    olMail.To = "mdmiller@gettysburg.edu"
                    olMail.Subject = "HAPPY BIRTHDAY!"
                    olMail.HTMLBody = "<html><body><p><IMG SRC='" & hbpicpath & "'></p></body></html>"
                    olMail.Send()
                Else
 
                End If
            Next
        Catch ex As Exception
            'MsgBox(ex.ToString)
            errorwrite(ex.ToString)
        End Try
    End Function

                                  
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Asked On
2009-08-05 at 12:16:00ID24629253
Topics

.NET

,

SQLBase

,

MS SQL Server

Participating Experts
3
Points
500
Comments
9

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Answers

 

by: aneeshattingalPosted on 2009-08-05 at 12:23:42ID: 25027062

i dont think this stament is causing the error

 

by: DanielWilsonPosted on 2009-08-05 at 12:25:37ID: 25027079

OK, please start by verifying you can reproduce the problem directly with SQL Server.

Open Query Analyzer and point a query window at the correct DB.  Then run this code:

Declare @sdate  DateTime
Set @sdate = getdate()
 
SELECT     achDateOfBirth, achEmail, achName, lMealPlan
FROM         tblStudent
WHERE     (DATEPART(MM, achDateOfBirth) = DATEPART(mm, @sdate)) AND (LEN(achEmail) > 1) AND (DATEPART(dd, achDateOfBirth) = DATEPART(dd, @sdate))
                      AND (NOT (achDateOfBirth = N'1/1/1900'))

                                              
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by: DanielWilsonPosted on 2009-08-05 at 12:27:02ID: 25027091

aneeshattingal, you may well be right.  I think my test above will be some indication one way or the other on that.

Millkind, what data type is achDateOfBirth?

 

by: acperkinsPosted on 2009-08-05 at 21:47:45ID: 25030193

>>I have not changed the software and the data has not changed. <<
I am afraid one or both has to have occurred.  The alternative is chaos.

 

by: MillkindPosted on 2009-08-06 at 04:07:06ID: 25031937

DanielWilson:  I ran that in the analyzer and got the same response.

Server: Msg 8115, Level 16, State 2, Line 4
Arithmetic overflow error converting expression to data type datetime.

achDateOfBirth is nvarchar

acperkins:  I tend to agree with you but the department that has control over my data says otherwise and I am trying to find a way to prove otherwise.

Sorry responses took so long had family emergency last night.

 

by: DanielWilsonPosted on 2009-08-06 at 08:59:01ID: 25034925

I strongly suspect you have some data that are not valid dates.  Using IsDate:
http://msdn.microsoft.com/en-us/library/ms187347.aspx

This does raise a 3rd possibility.

  1. The code changed -- you don't believe so 
  2. The data changed -- my suspicion, but you don't think so 
  3. The date format settings changed.
     

select * from tblStudents where IsDate(achDateOfBirth) = 0

                                              
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by: DanielWilsonPosted on 2009-08-06 at 09:00:25ID: 25034948

I don't suppose changing the field type is one of your options, but, fields intended to store dates should always use a date type -- DateTime and ShortDateTime come to mind.

 

by: MillkindPosted on 2009-08-06 at 09:06:39ID: 25035040

My super happy fun HR department that told me the data did not change, changed the data.  I feel horrible about this.  

Points split suggestion?

Daniel 300

aneeshattingal 100

acperkins100

If this seems fair to you all let me know.
Sorry again.

 

by: acperkinsPosted on 2009-08-06 at 18:17:30ID: 25039345

Fair enough.

20120131-EE-VQP-002

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