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MYSQL替换时间(年月日)字段,时分秒不变

2018-06-17 23:55:31来源：未知阅读 ()

写法1：
update sas_order_supply_month_pay set 
RECEIVE_TIME=REPLACE(RECEIVE_TIME,DATE_FORMAT(RECEIVE_TIME,'%Y-%m-%d'),(select PERIOD_END from sas_task_supply_month_pay_period where belong='1729' 
and CREATE_TIME like '%2017-07-12%')) where ORDER_CODE='PO201707130115';

写法2：
update sas_order_supply_month_pay set 
RECEIVE_TIME= ADDTIME ((select PERIOD_END from sas_task_supply_month_pay_period where belong='1729' 
and CREATE_TIME like '%2017-07-12%')+interval 0 hour,time(RECEIVE_TIME)) where ORDER_CODE='PO201707130115';

写法3：
update sas_order_supply_month_pay set 
RECEIVE_TIME = concat((select PERIOD_END from sas_task_supply_month_pay_period where belong='1729' 
and CREATE_TIME like '%2017-07-12%'),' ',DATE_FORMAT(RECEIVE_TIME,'%H:%i:%S')) where ORDER_CODE='PO201707130115';

说明： sas_order_supply_month_pay表的RECEIVE_TIME字段格式为"2017-06-16 12:13:16"，sas_task_supply_month_pay_period表的PERIOD_END字段格式为"2017-07-12",

执行后RECEIVE_TIME修改为"2017-07-12 12:13:16"。

错误写法：
update sas_order_supply_month_pay set 
RECEIVE_TIME = DATE_FORMAT(concat((select PERIOD_END from sas_task_supply_month_pay_period where belong='1729' 
and CREATE_TIME like '%2017-07-12%'),' ',(select DATE_FORMAT(RECEIVE_TIME,'%H:%i:%S') from sas_order_supply_month_pay 
where ORDER_CODE='PO201707130115')),"yyyy-MM-dd %H:%i:%S") where ORDER_CODE='PO201707130115';