I query history db with :
which provide the same function as :system.tag.queryTagHistory
With mode WIDE and ReturnSize(-1) and no interpolation, the result dataset contain one line for each each tag datachange.
I would like to obtain a result dataset with all the raw tags datachanges (no interpolation) merged when the t_stamp is the same.
Is it possible with system.tag.queryTagHistory ???
History DB :
In this case => only the last Row, but if some datachanges with different timestamp => different row.
Other question : what is the kind of streamingDataset we need to use with
to block until all the data are available ?