创建数据库的时候sql语句会有生成外键的语句:
//删除外键 alter table t_user_roles drop constraint fk_t_user_r_reference_t_user; alter table t_city_manager drop constraint fk_t_city_m_reference_t_user; alter table t_attention drop constraint fk_t_attent_reference_t_user; alter table t_bus_demand drop constraint fk_t_bus_de_reference_t_user; alter table t_quote drop constraint fk_t_quote_reference_t_suppli; //恢复外键 ALTER TABLE ONLY t_attention ADD CONSTRAINT fk_t_attent_reference_t_user FOREIGN KEY (w3_account) REFERENCES t_user(w3_account) ON UPDATE RESTRICT ON DELETE RESTRICT; ALTER TABLE ONLY t_bus_demand ADD CONSTRAINT fk_t_bus_de_reference_t_user FOREIGN KEY (w3_account) REFERENCES t_user(w3_account) ON UPDATE RESTRICT ON DELETE RESTRICT; ALTER TABLE ONLY t_city_manager ADD CONSTRAINT fk_t_city_m_reference_t_user FOREIGN KEY (w3_account) REFERENCES t_user(w3_account) ON UPDATE RESTRICT ON DELETE RESTRICT; ALTER TABLE ONLY t_quote ADD CONSTRAINT fk_t_quote_reference_t_suppli FOREIGN KEY (supplier_id) REFERENCES t_supplier(supplier_id) ON UPDATE RESTRICT ON DELETE RESTRICT; ALTER TABLE ONLY t_user_roles ADD CONSTRAINT fk_t_user_r_reference_t_user FOREIGN KEY (w3_account) REFERENCES t_user(w3_account) ON UPDATE RESTRICT ON DELETE RESTRICT;