Should NextColumn return a description of the column?

[mikepizzo]

Should SQLNextColumn return a description of the column in order to avoid having to make additional calls to read descriptor fields to find out the type?

[mikepizzo]

In the data_available case (not the metadata_changed case), the application may know the binding information and just need to call GetData/GetNestedHandle. Returning the descriptor information in this case would be unnecessary overhead for both the driver and the client.

This would be a good scenario to prototype and determine when the metadata is needed and to measure overhead.