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Limit Historical BarData Retrieval

Posted By alpha23 3 Years Ago
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Posted Thursday March 27 2014
How do I limit the number of bars retrieve but add those bars to the existing data. The IQFeed code does this but when creating a separate historical data class and returning only bars dated after what is already in the database, it removes the previous data and only adds the new bars. This is important because returning only the recent bars that have not already been added i) optimizes the data retrieval and ii) indicates when the last retrieval was.

Thanks, Duane


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