Hi,
The bug is reported very often:
http://bugzilla.ximian.com/show_bug.cgi?id=53169 http://bugzilla.ximian.com/show_bug.cgi?id=62390 http://bugzilla.ximian.com/show_bug.cgi?id=69768 http://bugzilla.ximian.com/show_bug.cgi?id=74856
This means that this should be corrected.
The problem is that Mono uses TDS 7.0 and it returns bigint as decimal(19,0).
This could be solved by implementing a TDS 8.0 client but it requires time...:)
The bug reports pointed out that the problem occurs when using SqlDataReader with typed result processing to get the best performance.
Bigint should be get using GetSqlInt64 or GetInt64 but on Mono it isn't Int64.
I attached a patch that works around the limitation of TDS 7.0 by enabling GetSqlInt64 and GetInt64 on decimals that can be bigint (the original type cannot be determined).
If you think this is a good solution please post it to SVN otherwise pleas comment the code.
Sincerely, Kornél
SqlDataReader.diff
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