1，select curdate()  /*2016-10-08*/

2,select date_sub(curdate(), INTERVAL 6 DAY) /*2016-10-02*/

3,case when then else 拼接条件查询：

WHERE
				(CASE  WHEN IFNULL(@belongCity,'0')='0' OR @belongCity=''  THEN  1 ELSE   

        CAST(LOCATE(@belongCity,worker_order.belong_city) AS SIGNED )   

        END)=1
AND

	(CASE  WHEN IFNULL(@energyStation,'0')='0'  THEN  1 ELSE   

        CAST(LOCATE(@energyStation,worker_order.repository_id) AS SIGNED )   

        END)=1
AND
	(CASE  WHEN IFNULL(@serviceStatioin,'0')='0'  THEN  1 ELSE   

        CAST(LOCATE(@serviceStatioin,worker_order.station_id) AS SIGNED )   

        END)=1
AND
				DATE_FORMAT(worker_order.create_time, '%Y-%m-%d') BETWEEN DATE_FORMAT(cast(@beginDateTime as datetime), '%Y-%m-%d') and DATE_FORMAT(cast(@endDateTime as datetime), '%Y-%m-%d')

GROUP BY DATE_FORMAT(worker_order.create_time,'%Y-%m-%d');

或者是这种：

WHERE
		LOCATE((CASE  WHEN IFNULL(@belongCity,'0')='0' OR @belongCity=''  THEN worker_order.belong_city ELSE  @belongCity END),worker_order.belong_city)>0
AND
	  LOCATE((CASE  WHEN IFNULL(@energyStation,'0')='0'  THEN  worker_order.repository_id ELSE   @energyStation END),worker_order.repository_id)>0
AND
	  LOCATE((CASE  WHEN IFNULL(@serviceStatioin,'0')='0'  THEN  worker_order.station_id ELSE  @serviceStatioin END),worker_order.station_id)>0
AND
		DATE_FORMAT(worker_order.create_time, '%Y-%m-%d') BETWEEN DATE_FORMAT(cast(@beginDateTime as datetime), '%Y-%m-%d') and DATE_FORMAT(cast(@endDateTime as datetime), '%Y-%m-%d')

GROUP BY DATE_FORMAT(worker_order.create_time,'%Y-%m-%d');

4,拼接starttime和endtime:

set @beginDateTime=(
										CASE
										WHEN ISNULL(beginDateTime) THEN
											date_sub(curdate(), INTERVAL 6 DAY)
										ELSE
											DATE_FORMAT(beginDateTime,'%Y-%m-%d')
										END
									); /*起始时间*/
set @endDateTime=(
										CASE
										WHEN ISNULL(endDateTime) THEN
											curdate()
										ELSE
											DATE_FORMAT(endDateTime,'%Y-%m-%d')
										END
									); /*结束时间*/

5,创建存储过程及调用存储过程：

DROP PROCEDURE IF EXISTS Pro_query_work_order_report;

CREATE PROCEDURE Pro_query_work_order_report (
	IN cityCode varchar(32),/*城市code*/
	IN energyStation INT,/*能源站code*/
	IN serviceStatioin INT,/*网点code*/
	IN beginDateTime datetime,/*开始时间*/
	IN endDateTime datetime/*结束时间*/
)
BEGIN

SET @belongCity = cityCode;/*所属城市code*/
set @energyStation=energyStation; /*能源站code*/
set @serviceStatioin=serviceStatioin; /*站点code*/
set @beginDateTime=(
										CASE
										WHEN ISNULL(beginDateTime) THEN
											date_sub(curdate(), INTERVAL 6 DAY)
										ELSE
											DATE_FORMAT(beginDateTime,'%Y-%m-%d')
										END
									); /*起始时间*/
set @endDateTime=(
										CASE
										WHEN ISNULL(endDateTime) THEN
											curdate()
										ELSE
											DATE_FORMAT(endDateTime,'%Y-%m-%d')
										END
									); /*结束时间*/

select 

	DATE_FORMAT(worker_order.create_time,'%Y-%m-%d') as create_time,/*创建时间*/
	(	select count(0)
		from biz_work_order tmp
		where
		DATE_FORMAT(tmp.create_time,'%Y-%m-%d')=DATE_FORMAT(worker_order.create_time,'%Y-%m-%d')
		or (tmp.create_time<DATE_FORMAT(worker_order.create_time,'%Y-%m-%d') and tmp.`status` in (1,2,4))
	)as should_change_worker_order,/*应换工单*/
	(
		select count(0)
		from biz_work_order tmp
		where
			DATE_FORMAT(tmp.create_time,'%Y-%m-%d')=DATE_FORMAT(worker_order.create_time,'%Y-%m-%d')
	) as new_add_work_order,/*新增工单*/
	(
		select count(0)
		from biz_work_order tmp
		where DATE_FORMAT(tmp.create_time,'%Y-%m-%d')=DATE_FORMAT(worker_order.create_time,'%Y-%m-%d') and tmp.`status`=3
	)as today_finished_order,/*今天已完成工单*/
	(
		select count(0)
		from biz_work_order tmp
		where DATE_FORMAT(tmp.create_time,'%Y-%m-%d')=DATE_FORMAT(worker_order.create_time,'%Y-%m-%d') and tmp.`status` in(1,2,4)
	) as today_unfinished_order,/*今天未完成订单*/
		cast(
		(select count(0)
		from biz_work_order tmp
		where DATE_FORMAT(tmp.create_time,'%Y-%m-%d')=DATE_FORMAT(worker_order.create_time,'%Y-%m-%d') and tmp.`status`=3
		)
		/
		(	select count(0)
		from biz_work_order tmp
		where
		DATE_FORMAT(tmp.create_time,'%Y-%m-%d')=DATE_FORMAT(worker_order.create_time,'%Y-%m-%d')
		or (tmp.create_time<DATE_FORMAT(worker_order.create_time,'%Y-%m-%d') and tmp.`status` in (1,2,4))
		)
		as decimal(18, 2)
	) as success_percent /*成功率*/

from biz_work_order worker_order

WHERE
				(CASE  WHEN IFNULL(@belongCity,'0')='0' OR @belongCity=''  THEN  1 ELSE   

        CAST(LOCATE(@belongCity,worker_order.belong_city) AS SIGNED )   

        END)=1
AND

	(CASE  WHEN IFNULL(@energyStation,'0')='0'  THEN  1 ELSE   

        CAST(LOCATE(@energyStation,worker_order.repository_id) AS SIGNED )   

        END)=1
AND
	(CASE  WHEN IFNULL(@serviceStatioin,'0')='0'  THEN  1 ELSE   

        CAST(LOCATE(@serviceStatioin,worker_order.station_id) AS SIGNED )   

        END)=1
AND
	DATE_FORMAT(worker_order.create_time, '%Y-%m-%d') BETWEEN DATE_FORMAT(cast(@beginDateTime as datetime), '%Y-%m-%d') and DATE_FORMAT(cast(@endDateTime as datetime), '%Y-%m-%d')

GROUP BY DATE_FORMAT(worker_order.create_time,'%Y-%m-%d');
END;

6,调用：（mysql 使用call进行调用，且不支持默认参数；sql server 使用exec进行调用，支持默认参数，有默认值的参数可以不传）

call Pro_query_work_order_report('50010',NULL,270,date_sub(curdate(), INTERVAL 6 DAY),curdate())

发现mysql怎么数据量大了，还没有sql server好用。。。难道是我的幻觉么。。