SQL 语句格式

SELECT
    `menuid`,
    SUM(`num`)AS total,
    `storeid`,
    DATE_FORMAT(`dateline`,'%Y-%m-%d') days
FROM
	loss
WHERE
    `storeid` = 2 
GROUP BY
    days,menuid


-- 查询 月 周 天
select DATE_FORMAT(create_time,'%Y%u') weeks,count(caseid) count from tc_case group by weeks;  
select DATE_FORMAT(create_time,'%Y%m%d') days,count(caseid) count from tc_case group by days;  
select DATE_FORMAT(create_time,'%Y%m') months,count(caseid) count from tc_case group by months;


-- 某店某菜品月销量(按天统计某店销售量)
SELECT 
	DATE_FORMAT(`order`.`dateline`,'%Y%m%d') days,
	sum(`order_detail`.`amount`)  
FROM
   `order_detail`
left join `order` on `order`.`orderid` = `order_detail`.`orderid`
WHERE `order`.`storeid` = 2 and `order`.`dateline` >= '2016-11-01' and `order`.`dateline` < '2016-12-10' and `order_detail`.`status` = 1  and `order_detail`.`menuid` = 2
GROUP BY
	days

-- 损耗统计(按天统计某店某菜损耗量)
SELECT
	DATE_FORMAT(`dateline`,'%Y%m%d') days,
	sum(`num`)  as `lnum` ,
	`menuid`
from 
	`loss`
where `storeid` = ? and `dateline` >= ? and `dateline` < ?  and `menuid` = ?
GROUP BY
	days

-- 退货统计
SELECT 
	DATE_FORMAT(`order`.`dateline`,'%Y%m%d') days,
	sum(`order_detail`.`amount` - `order_detail`.`takeamount`) as refund
FROM
   `order_detail`
LEFT JOIN `order` on `order`.`orderid` = `order_detail`.`orderid`
WHERE `order`.`storeid` = 1 and `order`.`dateline` >= '2016-11-01' and `order`.`dateline` < '2016-12-10' and `order_detail`.`status` = 4  and `order_detail`.`menuid` = 15
GROUP BY
	days


-- 全国排名 
SELECT 
	DATE_FORMAT(`run`.`datetime`,'%Y%m%d') days,
	sum(`run`.`step`) as tstep,
	`run`.`uid` as uid,
	`users`.`name`,
	`users`.`sex`,
	`users`.`birth`,
FROM
   `run`
LEFT JOIN `users` on `users`.`uid` = `run`.`uid`
WHERE `run`.`datetime` >= ? and `run`.`datetime` < ?  
GROUP BY
	days,uid
ORDER BY tstep DESC
LIMIT 20

-- 全国排名 自身排名
SELECT 
	`tb`.`days`,
	`tb`.`tstep`,
	`tb`.`name`,
	`tb`.`sex`,
	`tb`.`birth`,
	CASE
	WHEN @rowtotal = sum(`tb`.`tstep`) THEN @rownum
	WHEN @rowtotal := sum(`tb`.`tstep`) THEN @rownum :=@rownum + 1
	WHEN @rowtotal = 0 THEN @rownum :=@rownum + 1
	END AS rank
FROM
   	(SELECT 
		DATE_FORMAT(`run`.`datetime`,'%Y%m%d') days,
		sum(`run`.`step`) as tstep,
		`run`.`uid` as uid,
		`users`.`name`,
		`users`.`sex`,
		`users`.`birth`
	FROM
	   `run`
	LEFT JOIN `users` on `users`.`uid` = `run`.`uid`
	WHERE `run`.`datetime` >= ? and `run`.`datetime` < ?  
	GROUP BY
		days,uid
	ORDER BY tstep DESC
	LIMIT 20
	) as `tb`,
	(SELECT @rownum := 0 ,@rowtotal := NULL) r