Does arctic support query? I want to fetch data of some stock between a start time and a end time. about arctic HOT 6 CLOSED

Yes -- assuming you are using VersionStore, you can specify date_range. See VersionStore.read docstring

from arctic.

@AdrianTeng Thanks. I tried the method. However, the result does not work well.
Something wrong?
mongodb: 3.2.1.
arctic: 1.18.0

The result of

print stocks.read('aapl', daterange=dr).data

seems wrong. The date_range parameter does not work.

from arctic.

The parameter is date_range not daterange

from arctic.

@jamesblackburn
Thanks.
My mistake, so stupid...
Another issue is that I just wonder why VersionStore does not support columns parameter similar to TickStore.

from arctic.

When we were benchmarking implementations initially the fastest way to read and write the chunks was as a single item without splitting out the columns.

We also often want most the columns, so it seemed reasonable to leave it to the client.

from arctic.

Thanks a lot. You guys did a fabulous job.

from arctic.