Quote:
Originally Posted by chaley
Modifying calibre's database outside of calibre is extremely dangerous.
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I've only successfully done it once, and that was before more changes and triggers were added. I'd go farther than Charles and say that even experts should not try this. Reading the database is OK, but changing it isn't. You have to have a detailed knowledge of how Calibre works to safely make direct SQL changes. By the time an expert knows enough to do it safely, they'll see it's easier to do it inside Calibre, with Calibre's existing tools, than to do it in SQL.