Data type conversion

Automate and integrate using the SQL comparison API

Data type conversion

Postby bryantb2 » Tue Nov 01, 2011 8:31 pm

I have manually mapped 2 databases as follows:

tableMapping.FieldMappings.Add(new FieldMapping(tableMapping.Obj1.Fields["pa_firstname"], tableMapping.Obj2.Fields["FirstName"], FieldMappingStatus.Success));
tableMapping.FieldMappings.Add(new FieldMapping(tableMapping.Obj1.Fields["pa_lastname"], tableMapping.Obj2.Fields["LastName"], FieldMappingStatus.Success));
tableMapping.MatchingMappings.Add(new FieldMapping(tableMapping.Obj1.Fields["pa_id"], tableMapping.Obj2.Fields["SurrogateKey"], FieldMappingStatus.Success));

My problem is that when I call CompareDatabases I receive the following error:

RedGate.SQLCompare.Engine.SqlCompareException was unhandled
Message=Unable to compare between fields pa_id and SurrogateKey, types being compared System.Int64 and System.String.

Is it possible to compare a field, in this case "pa_id", as a varchar type rather than its native type?
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Postby Chris.Allen » Thu Nov 03, 2011 12:26 pm

The thing to do here would be to cast into a view and then perform the comparison
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Postby bryantb2 » Thu Nov 03, 2011 2:01 pm

That's what we were doing as an interim solution. It would be nice if widening conversions could be handled somehow without the use of a view though.
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