Oracle 查询一个月内每天指定时间段内的数据量

Posted 2021-07-19 思想累积

下面代码是查询在 2021 年 4 月份，每天 9 点到 12 点的数据总数

SELECT
	COUNT( ID ) 
FROM
	TABLE_NAME 
WHERE
	DEPT_CODE = '1'
	AND
		FINISH_TIME  BETWEEN '2021-04-01 00:00:00' AND '2021-04-30 23:59:59'
	AND
		to_date( SUBSTR( FINISH_TIME, - 9 ), 'hh24:mi:ss' )
	BETWEEN to_date( '09:00:00', 'hh24:mi:ss' ) AND to_date( '12:00:00', 'hh24:mi:ss' );