issue_comments

Demo of the fix: https://latest.datasette.io/fixtures/foreign_key_references (the compound foreign key columns do not link to anything)

Fix is out in 0.52.1: https://docs.datasette.io/en/latest/changelog.html#v0-52-1

For the moment I'm going to solve this by teaching Datasette's internal introspection methods - in particular these ones - to ignore compound foreign keys entirely:

https://github.com/simonw/datasette/blob/e800ffcf7cc6a915eb554b369c654f87162575e5/datasette/utils/init.py#L470-L505

Schema for that broken example: sql CREATE TABLE generators_eia860 ( id INTEGER NOT NULL, plant_id_eia INTEGER, generator_id TEXT, report_date DATE, operational_status_code TEXT, operational_status TEXT, ownership_code TEXT, utility_id_eia INTEGER, capacity_mw FLOAT, summer_capacity_mw FLOAT, winter_capacity_mw FLOAT, energy_source_code_1 TEXT, energy_source_code_2 TEXT, energy_source_code_3 TEXT, energy_source_code_4 TEXT, energy_source_code_5 TEXT, energy_source_code_6 TEXT, fuel_type_code_pudl TEXT, multiple_fuels BOOLEAN, deliver_power_transgrid BOOLEAN, syncronized_transmission_grid BOOLEAN, turbines_num INTEGER, planned_modifications BOOLEAN, planned_net_summer_capacity_uprate_mw FLOAT, planned_net_winter_capacity_uprate_mw FLOAT, planned_uprate_date DATE, planned_net_summer_capacity_derate_mw FLOAT, planned_net_winter_capacity_derate_mw FLOAT, planned_derate_date DATE, planned_new_prime_mover_code TEXT, planned_energy_source_code_1 TEXT, planned_repower_date DATE, other_planned_modifications BOOLEAN, other_modifications_date DATE, planned_retirement_date DATE, carbon_capture BOOLEAN, startup_source_code_1 TEXT, startup_source_code_2 TEXT, startup_source_code_3 TEXT, startup_source_code_4 TEXT, technology_description TEXT, turbines_inverters_hydrokinetics TEXT, time_cold_shutdown_full_load_code TEXT, planned_new_capacity_mw FLOAT, cofire_fuels BOOLEAN, switch_oil_gas BOOLEAN, nameplate_power_factor FLOAT, minimum_load_mw FLOAT, uprate_derate_during_year BOOLEAN, uprate_derate_completed_date DATE, current_planned_operating_date DATE, summer_estimated_capability_mw FLOAT, winter_estimated_capability_mw FLOAT, retirement_date DATE, PRIMARY KEY (id), FOREIGN KEY(plant_id_eia, generator_id) REFERENCES generators_entity_eia (plant_id_eia, generator_id), FOREIGN KEY(utility_id_eia) REFERENCES utilities_entity_eia (utility_id_eia), CHECK (multiple_fuels IN (0, 1)), CHECK (deliver_power_transgrid IN (0, 1)), CHECK (syncronized_transmission_grid IN (0, 1)), CHECK (planned_modifications IN (0, 1)), CHECK (other_planned_modifications IN (0, 1)), CHECK (carbon_capture IN (0, 1)), CHECK (cofire_fuels IN (0, 1)), CHECK (switch_oil_gas IN (0, 1)), CHECK (uprate_derate_during_year IN (0, 1)) ); https://pudl-datasette-xl7xwcpe2a-uc.a.run.app/pudl/generators_entity_eia is: sql CREATE TABLE generators_entity_eia ( plant_id_eia INTEGER NOT NULL, generator_id TEXT NOT NULL, prime_mover_code TEXT, duct_burners BOOLEAN, operating_date DATE, topping_bottoming_code TEXT, solid_fuel_gasification BOOLEAN, pulverized_coal_tech BOOLEAN, fluidized_bed_tech BOOLEAN, subcritical_tech BOOLEAN, supercritical_tech BOOLEAN, ultrasupercritical_tech BOOLEAN, stoker_tech BOOLEAN, other_combustion_tech BOOLEAN, bypass_heat_recovery BOOLEAN, rto_iso_lmp_node_id TEXT, rto_iso_location_wholesale_reporting_id TEXT, associated_combined_heat_power BOOLEAN, original_planned_operating_date DATE, operating_switch TEXT, previously_canceled BOOLEAN, PRIMARY KEY (plant_id_eia, generator_id), FOREIGN KEY(plant_id_eia) REFERENCES plants_entity_eia (plant_id_eia), CHECK (duct_burners IN (0, 1)), CHECK (solid_fuel_gasification IN (0, 1)), CHECK (pulverized_coal_tech IN (0, 1)), CHECK (fluidized_bed_tech IN (0, 1)), CHECK (subcritical_tech IN (0, 1)), CHECK (supercritical_tech IN (0, 1)), CHECK (ultrasupercritical_tech IN (0, 1)), CHECK (stoker_tech IN (0, 1)), CHECK (other_combustion_tech IN (0, 1)), CHECK (bypass_heat_recovery IN (0, 1)), CHECK (associated_combined_heat_power IN (0, 1)), CHECK (previously_canceled IN (0, 1)) );

Need to replicate this in the fixtures, then fix it.