Have you tried a more simple query to make sure that communication between
your application and the database is working properly?

Have you tried a variable name for 'Tick Date' that does not include spaces?

-Ed


> -----Original Message-----
> Hello all.. I'm running into a little bit of a problem.. I'm writing a
> program in VB.NET and every time i try to load query results into my
> dataset i keep getting:
> 
> /An Unhandled Exception of type 'System.InvalidOperationException'
> occurred in system.data.dll
> 
> Additional information: Inconvertable type mismatch between SourceColumn
> 'Tick Date' of Byte[] and the Datacolumn 'Tick Date' of DateTime.
> 
> /The Query I'm using is:
> 
> /SELECT DATE_FORMAT(date,'% %M %e %Y') as 'Tick Date', SUM( IF "
> (Ticktype='1',1,0)) as 'Technical', SUM( IF (Ticktype='2',1,0)) as
> 'Reference', SUM( IF (Ticktype='3',1,0)) as 'Directional', SUM( IF
> (Ticktype='4',1,0)) as 'Search' FROM tickcount GROUP BY
> DATE_FORMAT(date,'% %M %e %Y')
> 
> / I have tried changing the datatype in the dataset definition but the
> only one that works is unasignedbyte, and that returns " Byte [] Array"
> instead of the date that I'm formating..
> I'm using MySQL version 3.23.37, and VB.NET v.1.2
> 
> Any help would be great,
> 
> Many thanks,
> 
> Tom T


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