ALTER TABLE tx_reservation_libre ADD tx_vhc_type_id INT DEFAULT NULL;
ALTER TABLE tx_reservation_libre ADD CONSTRAINT FK_A0187A60E90FFCDF FOREIGN KEY (tx_vhc_type_id) REFERENCES tx_vhc_type (id) ON DELETE SET NULL;
CREATE INDEX IDX_A0187A60E90FFCDF ON tx_reservation_libre (tx_vhc_type_id);
