Oracle 查询向上或向下舍入到最接近的 15 分钟间隔 [英] Oracle query Round up or down to nearest 15 minute interval

问题描述

08-SEP-20 08:55:0508-SEP-20 15:36:13

下面的查询在 15:36:13 正常工作，因为它四舍五入到 15:30，但 8:55:05 向下舍入到 08:45，而它应该四舍五入到 09:00

select event_date,trunc(event_date,'mi') - numtodsinterval( mod(to_char(event_date,'mi'),15), 'minute' ) asnearest_quarter来自 time_source_in_all，其中 empno = '002307718' 和 event_date 介于 '8-sep-2020' 和 '9-sep-2020'

解决方案

您可以使用:

SELECT event_date,TRUNC(事件日期，'HH')+ ROUND(EXTRACT(MINUTE FROM CAST(event_date AS TIMESTAMP))/15)* 间隔15"分钟AS rounded_15_event_date从表名

或:

SELECT event_date,TRUNC(事件日期，'HH')+ ROUND(( event_date - TRUNC( event_date, 'HH' ) ) * 24 * 4 )* 间隔15"分钟AS rounded_15_event_date从表名

对于您的示例数据:

CREATE TABLE table_name ( event_date ) AS选择日期 '2020-09-08' + 时间间隔 '08:55:05' 小时到第二个双联所有选择日期 '2020-09-08' + 间隔 '15:36:13' 小时到第二个

两个输出:

<块引用><前>EVENT_DATE |ROUNDED_15_EVENT_DATE:------------------ |:--------------------2020-09-08 08:55:05 |2020-09-08 09:00:002020-09-08 15:36:13 |2020-09-08 15:30:00

db<>fiddle 这里

08-SEP-20 08:55:05
08-SEP-20 15:36:13

The query below is working correctly for 15:36:13 in that it rounds to 15:30 but the 8:55:05 is rounding down to 08:45 when it should be rounding to 09:00

select event_date,trunc(event_date,'mi') - numtodsinterval(  mod(to_char(event_date,'mi'),15),  'minute'  ) as nearest_quarter
from time_source_in_all where empno = '002307718' and event_date between  '8-sep-2020' and '9-sep-2020'

解决方案

You can use:

SELECT event_date,
       TRUNC( event_date, 'HH' )
         + ROUND( EXTRACT( MINUTE FROM CAST( event_date AS TIMESTAMP ) ) / 15 )
           * INTERVAL '15' MINUTE
         AS rounded_15_event_date
FROM   table_name

or:

SELECT event_date,
       TRUNC( event_date, 'HH' )
         + ROUND( ( event_date - TRUNC( event_date, 'HH' ) ) * 24 * 4 )
           * INTERVAL '15' MINUTE
         AS rounded_15_event_date
FROM   table_name

Which, for your sample data:

CREATE TABLE table_name ( event_date ) AS
SELECT DATE '2020-09-08' + INTERVAL '08:55:05' HOUR TO SECOND FROM DUAL UNION ALL
SELECT DATE '2020-09-08' + INTERVAL '15:36:13' HOUR TO SECOND FROM DUAL

Both output:

EVENT_DATE          | ROUNDED_15_EVENT_DATE
:------------------ | :--------------------
2020-09-08 08:55:05 | 2020-09-08 09:00:00  
2020-09-08 15:36:13 | 2020-09-08 15:30:00  

db<>fiddle here

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