mysql 日期处理成财年财季财月财周

财年是一个公司的上市时间决定的，所以不同的公司财年码表不同，因为我目前用的财年是从4月1号开始算的，自己就写了个mysql 的工具函数：

SELECT

-- 自然日

naturalday,

-- 财年

concat('FY', DATE_FORMAT(naturalday,'%y'),  DATE_FORMAT(naturalday,'%y')+1) as fiscalyear,

-- 财季

concat('Q', case when QUARTER(naturalday)=4 then 1 ELSE QUARTER(naturalday)-1 END

) as fiscalquarter,

-- 财月

DATE_FORMAT(naturalday,'%m') as fiscalmonth,

-- 财周

timestampdiff(WEEK,date(concat(year(naturalday),'-',elt(quarter(naturalday),1,4,7,10),'-',1)),naturalday) as fiscalweek

from tool_lenovo_day;

一下是我写的一个存储过程：

CREATE DEFINER=`root`@`%` PROCEDURE `sp_InitialFiscalYear_data`(`sDate` varchar(20),`eDate` varchar(20))

BEGIN

/*

工具函数：生成时间段内的lenovo的财年、财季、财月、财周数据

做成：白纸黑字

做成日：2020-07-16

入参：

sDate 开始自然日

eDate 结束自然日

业务逻辑：

tool_lenovo_day 财年表

有更新、没有新增财年数据

*/

INSERT INTO tool_lenovo_day SELECT

*

FROM

(

SELECT

naturalday,

concat( 'FY', DATE_FORMAT( naturalday, '%y' ), DATE_FORMAT( naturalday, '%y' )+ 1 ) AS fiscalyear,

concat( 'Q', CASE WHEN QUARTER ( naturalday )= 4 THEN 1 ELSE QUARTER ( naturalday )- 1 END ) AS fiscalquarter,

DATE_FORMAT( naturalday, '%m' ) AS fiscalmonth,

timestampdiff(

WEEK,

date(

concat( YEAR ( naturalday ), '-', elt( QUARTER ( naturalday ), 1, 4, 7, 10 ), '-', 1 )),

naturalday

)+1 AS fiscalweek

FROM

(

SELECT

date_add( date_sub(sDate,interval 1 day), INTERVAL ( cast( help_topic_id AS signed INTEGER ) + 1 ) day ) naturalday

FROM

mysql.help_topic

WHERE

help_topic_id < DATEDIFF(eDate,date_sub(sDate,interval 1 day))

ORDER BY

help_topic_id

) as s_e_day

) AS a

ON DUPLICATE KEY UPDATE fiscalyear = a.fiscalyear,

fiscalquarter = a.fiscalquarter,

fiscalmonth = a.fiscalmonth,

fiscalweek = a.fiscalweek;

END