Hi I have following data set of 5 minutes bar Date_Time, symbol, close_price 2022-06-14 10:00, ES, 5.31 2022-06-14 10:05, ES, 5.25 2022-06-14 10:10, ES, 5.29 2022-06-14 10:15, ES, 5.33 I would like to fetch the data so it would get the close_price from previous row for each current row so ou…

The documentation indicates MongoDB 3.6 adds support for: Executing a pipeline on a joined collection. so it should work. Looking at the documentation, one of my best friend, I remembered: A $match stage requires the use of an $expr operator to access the variables. The $expr operator allows…

steevej (Steeve Juneau) June 14, 2022, 7:45pm 4

The quotes are not usable.

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Fetch the value of column from previous row