I have recently started using IQFeed as a data supplier for the London Stock Exchange. I only use the data for EOD bars and scans.
I have my database setup as shown on this Amibroker page (https://www.amibroker.com/guide/h_iqfeed.html), the only exception being that under Intraday settings I don't allow mixing of EOD and intraday data as I don't use the RT quote feature.
One of the things that I can't figure out is how to have my local data storage updated for stock splits and bad data points as they are adjusted for by IQFeed.
By way of example - I have found several cases where there have been bad data points or incomplete histories in the IQFeed database. To IQFeed's credit, when I have notified them of these errors they have been reviewed and corrected within 24 hours. I can see these updates have been done and are available using the "Time and Sales" app supplied by IQFeed.
But in my database I need to "Force backfill" to refresh my data. The process of creating a simple scan as shown on this page (https://www.amibroker.com/guide/h_rtsource.html) and running it across all the symbols doesn't update the historical data stored in my local database. I can only achieve this by "Force backfill" on the individual symbol. I have read elsewhere on the Forum that the "Force backfill" deletes the existing data of the symbol and then re-downloads it from IQFeed.
My question is: can I "Force backfill" somehow across hundreds of symbols at once. The reason I want to do this is to make sure that my local database is current and up-to-date for stock splits and any other adjustments that may be made over time by IQFeed.
It is not practical to this by hand with hundreds of symbols in the database. Can someone suggest how this may be achieved across all symbols on a regular basis (say weekly), hopefully while maintaining my symbol watchlists, ie: not deleting all the symbols and reloading them again.
I have found several similar Forum posts but they seem to either stop short of addressing how to do a bulk forced backfill, or relate to updating the most current data while the computer was turned off or similar.
Thanks in advance for the help and responses