Not withstanding javafan's excellent questions, a couple of possibilities that I've used successfully in the past to speed up updates.

  1. Upload the data required to make the updates into a simple, unindexed scratch table using the bulk loader.

    Apply the updates from the scratch table to their destination(s) using a stored procedure.

  2. Temporarily delete any indexes or foreign keys from the table to be updated, that aren't explicitly required for the update process, and re-create them afterwards.
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In reply to Re: Optimize DB update by BrowserUk
in thread Optimize DB update by demophoon88

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