[Mono-dev] A bug in the latest SVN System.Data (concurrency exception)?

Kornél Pál kornelpal at gmail.com
Wed Oct 18 17:10:20 EDT 2006

>DateTime dt = new DateTime(0);
>which yields, for the MySql connector the following string:
>0001-01-01 00:00:00
>and I have a field in the database of the date type set to 0,
>which for MySql renders the string:
>0000-00-00 00:00:00
>Now, the command builder builds a command that first sets all the
>fields and then uses them all in the WHERE clause with the original
>values - this is the way Mono detects the concurrency problem.
>Obviously, there is no match for the above datetime field and the
>entire transaction "fails" - that is, no rows are affected and the
>exception is thrown. Not sure how to solve it though :)

Is it possible to pass date values as integers rather than strings? It could 
solve the problem. Note that 0000-00-00 00:00:00 is an invalid date so MySql 
may store 0001-01-01 00:00:00 using a different value that is non-zero. If 
there is no other solution 0001-01-01 00:00:00 and 0000-00-00 00:00:00 
should be treated equally by the connector.


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