MYSQL获取当前年、季、月、周第一天、最后一天的日期/时间戳

 一 、下面是一些mysql的时间获取语句:

#当年第一天:
SELECT DATE_SUB(CURDATE(),INTERVAL dayofyear(now())-1 DAY);

#当年最后一天:
SELECT concat(YEAR(now()),’-12-31’);

#当前week的第一天:
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 1 DAY);

#当前week的最后一天:
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) - 5 DAY);

#前一week的第一天:
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 8 DAY);

#前一week的最后一天:
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 2 DAY);

#前两week的第一天:
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 15 DAY);

#前两week的最后一天:
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 9 DAY);

#当前month的第一天:
SELECT concat(date_format(LAST_DAY(now()),’%Y-%m-’),‘01’);

#当前month的最后一天:
SELECT LAST_DAY(now());

#前一month的第一天:
SELECT concat(date_format(LAST_DAY(now() - interval 1 month),’%Y-%m-’),‘01’);

#前一month的最后一天:
SELECT LAST_DAY(now() - interval 1 month);

#前两month的第一天:
SELECT concat(date_format(LAST_DAY(now() - interval 2 month),’%Y-%m-’),‘01’);

#前两month的最后一天:
SELECT LAST_DAY(now() - interval 2 month);

#当前quarter的第一天:
select concat(date_format(LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-3 month),’%Y-%m-’),‘01’);

#当前quarter的最后一天:
select LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-1 month);

#前一quarter的第一天:
select concat(date_format(LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-6 month),’%Y-%m-’),‘01’);

#前一quarter的最后一天:
select LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-4 month);

#前两quarter的第一天:
select concat(date_format(LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-9 month),’%Y-%m-’),‘01’);

#前两quarter的最后一天:
select LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-7 month);

二、举几个某会员的消费分析的sql语句:

-- 今年的消费总额
SELECT IFNULL(SUM(a.trade_amount)/100,0)
FROM mob_checkout_counter.checkout_record a  -- 消费记录表
WHERE card_code = '某会员的标识'
AND checkout_status = ‘消费状态’AND trade_time >= UNIX_TIMESTAMP(DATE_SUB(CURDATE(),INTERVAL dayofyear(now())-1 DAY)) -- 当前年的第一天的时间戳
AND trade_time <= UNIX_TIMESTAMP(CAST(SYSDATE()AS DATE) - INTERVAL 1 DAY) -- 昨天的0时的时间戳
– 今年的消费笔数
SELECT COUNT(*)
FROM mob_checkout_counter.checkout_record a
WHERE card_code = ‘2396998881100009965’
AND checkout_status = 1
AND trade_time >= UNIX_TIMESTAMP(DATE_SUB(CURDATE(),INTERVAL dayofyear(now())-1 DAY))
AND trade_time <= UNIX_TIMESTAMP(CAST(SYSDATE()AS DATE) - INTERVAL 1 DAY)

– 今年的客单价
SELECT IFNULL(SUM(a.trade_amount)/100,0)/COUNT(*)
FROM mob_checkout_counter.checkout_record a
WHERE card_code = ‘2396998881100009965’
AND checkout_status = 1
AND trade_time >= UNIX_TIMESTAMP(DATE_SUB(CURDATE(),INTERVAL dayofyear(now())-1 DAY))
AND trade_time <= UNIX_TIMESTAMP(CAST(SYSDATE()AS DATE) - INTERVAL 1 DAY)

转自:https://www.cnblogs.com/1996swg/p/9254492.html

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