mysql函数

1. FROM_UNIXTIME()函数时间戳转换时间

SELECT FROM_UNIXTIME(1588238359) AS 时间;

2. year()获取时间的年份

SELECT YEAR('2020-04-30 17：19：19') AS 年;

3. month()获取时间的月份

SELECT MONTH('2020-04-30 17：19：19') AS 月;

4. day()获取时间的日

SELECT DAY('2020-04-30 17：19：19') AS 日;

下面查询统计 "每年" 的订单数和订单总金额(createtime在数据库为时间戳)

-- 下面查询统计每年的订单(createtime在数据库为时间戳)

-- 下面查询统计每年的订单(createtime在数据库为时间戳)

-- 订单数量

SELECT YEAR(FROM_UNIXTIME(createtime)) 年,COUNT(*) FROM `order` WHERE 1 GROUP BY YEAR(FROM_UNIXTIME(createtime));

-- 总金额

SELECT YEAR(FROM_UNIXTIME(createtime)) 年,SUM(price) FROM `order` WHERE 1 GROUP BY YEAR(FROM_UNIXTIME(createtime));

下面查询统计 "每月" 的订单数和订单总金额(createtime在数据库为时间戳)

-- 下面查询统计每月的订单(createtime在数据库为时间戳)

-- 订单数量

-- 下面查询统计每月的订单(createtime在数据库为时间戳)

-- 订单数量

SELECT YEAR(FROM_UNIXTIME(createtime)) 年,MONTH(FROM_UNIXTIME(createtime)) 月,COUNT(*) FROM `order` WHERE 1 GROUP BY YEAR(FROM_UNIXTIME(createtime)),MONTH(FROM_UNIXTIME(createtime));

-- 总金额

SELECT YEAR(FROM_UNIXTIME(createtime)) 年,MONTH(FROM_UNIXTIME(createtime)) 月,SUM(price) FROM `order` WHERE 1 GROUP BY YEAR(FROM_UNIXTIME(createtime)),MONTH(FROM_UNIXTIME(createtime));

下面查询统计 "每日" 的订单数和订单总金额(createtime在数据库为时间戳)

-- 下面查询统计每日的订单(createtime在数据库为时间戳)

-- 订单数量

-- 下面查询统计每日的订单(createtime在数据库为时间戳)

-- 订单数量

SELECT YEAR(FROM_UNIXTIME(createtime)) 年,MONTH(FROM_UNIXTIME(createtime)) 月,DAY(FROM_UNIXTIME(createtime)) 日,COUNT(*) FROM `order` WHERE 1 GROUP BY YEAR(FROM_UNIXTIME(createtime)),MONTH(FROM_UNIXTIME(createtime)),DAY(FROM_UNIXTIME(createtime));

-- 总金额

SELECT YEAR(FROM_UNIXTIME(createtime)) 年,MONTH(FROM_UNIXTIME(createtime)) 月,DAY(FROM_UNIXTIME(createtime)) 日,SUM(price) FROM `order` WHERE 1 GROUP BY YEAR(FROM_UNIXTIME(createtime)),MONTH(FROM_UNIXTIME(createtime)),DAY(FROM_UNIXTIME(createtime));

例1：统计每月的销售总金额

说明：

字段createTime 当前系统时间格式为yyyy-MM-dd HH:mm:ss；

字段 price 销售额；

CASE MONTH(createTime) WHEN '8' THEN price ELSE 0 end：获取字段createTime时间的月份，当月份为8月，获取8月所有的销售额，若没有销售额销售额则为0；

SUM(CASE MONTH(createTime) WHEN '8' THEN price ELSE 0 END)：将8月所有的销售额进行合计；

IFNULL(SUM(CASE MONTH(createTime) WHEN '8' THEN price ELSE 0 END), 0) AS 八月份  ：类似三元运算符，IFNULL(当月总销售额,0)，假如销售额不为 NULL，则 IFNULL() 的返回值为当月总销售额，否则为0，AS别名为'八月份'；

#{year}：要查询的年份；

select

IFNULL(SUM(CASE MONTH(createTime) WHEN '1' THEN price ELSE 0 END), 0) AS 一月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '2' THEN price ELSE 0 END), 0) AS 二月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '3' THEN price ELSE 0 END), 0) AS 三月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '4' THEN price ELSE 0 END), 0) AS 四月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '5' THEN price ELSE 0 END), 0) AS 五月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '6' THEN price ELSE 0 END), 0) AS 六月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '7' THEN price ELSE 0 END), 0) AS 七月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '8' THEN price ELSE 0 END), 0) AS 八月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '9' THEN price ELSE 0 END), 0) AS 九月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '10' THEN price ELSE 0 END), 0) AS 十月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '11' THEN price ELSE 0 END), 0) AS 十一月份,

IFNULL(SUM(CASE MONTH(createTime) WHEN '12' THEN price ELSE 0 END), 0) AS 十二月份

FROM `order`

WHERE YEAR(createTime)=#{year};

当年每月销售总额结果为：

例2：统计每月的销售总金额

-- 统计每月销售总金额

-- 统计每月销售总金额

SELECT

SUM(price),

cTime

FROM

(SELECT

oid,

price,

DATE_FORMAT(createtime, '%y-%c') cTime

FROM

`order`) AS o

GROUP BY cTime ;

查询每一天  每个订单 的总金额  并按时间排序

SELECT date(c_time) as time,

SUM(CASE WHEN orderID in('xxx') THEN among ELSE 0 END) as o,

SUM(CASE WHEN orderID in('fff') THEN among ELSE 0 END) as p,

SUM(CASE WHEN orderID in('iii','mmm') THEN among ELSE 0 END) as l,

SUM(CASE WHEN orderID in('rr','ww','ff') or orderID is null THEN among ELSE 0 END) as other

FROM order.detail where date(c_time) between '2001-01-02' and '2001-03-28' GROUP BY date(c_time)

原文链接：https://blog.csdn.net/BestEternity/article/details/106616367

标签：SUM,UNIXTIME,订单数,WHEN,MONTH,price,MySQL,查询,createtime

来源： https://blog.csdn.net/sirobot/article/details/114287767