Most efficient way to add information to rows by matching the time stamp from two data tables?
I extracted Historian data at 5 second intervals over a long time period, ending up with a data table of many many rows. Initially in this data table I had two columns (call this table "2205 - 2209 PD3102" and I referenced to it as dtPDTag):1. Date/time stamp2. Data value (for the Historian tag)
In a different data table (dt in the below JSL syntax) I had the start and end time of productions for w...