昨天数据

SELECT
	* 
FROM
	sys_device 
WHERE  age(current_date,to_timestamp(substring(update_time FROM 1 FOR 10),'yyyy-MM-dd')) ='1 days';

今天数据

SELECT
	* 
FROM
	sys_device 
WHERE  to_char(update_time:: DATE, ' yyyy-MM-DD hh 24: mi :s') = to_char(CURRENT_DATE:: DATE, ' yyyy-MM-DD hh 24: mi :s')