Reverse-engineering SMW's v3 data schema. Can't find any documentation on it. There may be class wrappers that would make this unnecessary, but can't find anything likely-looking in the code docs.
Fortunately I had apparently spent some time on this earlier and made a little progress.
What mystifies me is that they seem to have dropped the idea of having an index for all the different field-types; you have to look through all of them now...
This just needs to function.
#woozlog