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As the manual says (emphasis mine): MySQL requires indexes on foreign keys and referenced keys so that foreign key checks can be fast and not require a table scan. In the referencing table, there must be an index where the foreign key columns are listed as the first columns in the same order. Such an index is created on the referencing table automatically ...


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There is no information_schema in SQLite as pointed out by @mustaccio. However, you can get the information you require by using this SQL: SELECT name FROM sqlite_master WHERE type ='table' AND name NOT LIKE 'sqlite_%'; See the link here. Tables which begin with sqlite_ are SQLite's system tables and are explained here. Remember ...


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To solve this problem I changed the code to the following: lt_mode_data = data['lifetime']['mode'] mode_dict = {} game_mode_data = GameModeData() lifetime_mode = LifetimeMode() for index, (mode, mode_data) in enumerate(lt_mode_data.items()): mode_dict[mode] = mode_data['properties'] lifetime_mode = lifetime_mode.from_json(...


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