ALTER TABLE simulation_demand CHANGE node_id workspace_id varchar(255) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL COMMENT '工位id';
ALTER TABLE simulation_demand MODIFY COLUMN workspace_id varchar(255) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL COMMENT '工位id';
ALTER TABLE simulation_demand MODIFY COLUMN phase_id varchar(255) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL COMMENT '阶段id';
ALTER TABLE simulation_demand MODIFY COLUMN project_id varchar(255) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL COMMENT '项目id';
ALTER TABLE simulation_demand ADD machine_id varchar(255) NULL COMMENT '机台id';