查询多个表的数据合并行

 select ifnull(b.chargeNum,0) as chargeNum,ifnull(a.electricNum,0) as electricNum,ifnull(c.electricity,0) as electricity,ifnull(d.mileage,0) as mileage from (
                select count(1) as electricNum from  test_car_statistical where type=1 and date(create_time) = curdate()
                )  a
                
                LEFT JOIN
                (
                select count(1) as chargeNum from  test_car_statistical where type=2 and date(create_time) = curdate()
                ) b
                on 1=1
                
                LEFT JOIN
                (
                select sum(electricity) as electricity from  test_car_statistical where  date(create_time) = curdate()
                ) c
                on 1=1
                
                LEFT JOIN
                (
                select sum(mileage) as mileage from  test_car_statistical where  date(create_time) = curdate()
                ) d
                on 1=1

效果