slap a multi-column index on DBValue timeseries_id and timestamp, since we'll be making a lot of these queries now
slap a multi-column index on DBValue timeseries_id and timestamp,
since we'll be making a lot of these queries now

nathanhilbert/ulmo,nathanhilbert/ulmo,ocefpaf/ulmo,ocefpaf/ulmo,cameronbracken/ulmo,cameronbracken/ulmo