Summing of INTERVAL returns incorrect number of days and hours - Mailing list pgsql-bugs

From Milan Novotny
Subject Summing of INTERVAL returns incorrect number of days and hours
Date
Msg-id CACZpPHoN2wHXDushnJqJy3Aus-MzYq_V3WjB9KaU8ATjXdrQeg@mail.gmail.com
Whole thread Raw
Responses Re: Summing of INTERVAL returns incorrect number of days and hours
List pgsql-bugs
Hello,

SELECT

SUM(upper(timestamp_range) - lower(timestamp_range)) AS sum_range_interval

FROM

(

VALUES

('["2021-09-13 10:53:03.668","2022-08-28 00:19:16.212"]'::tsrange),

('["2022-08-29 00:00:03.088","2023-04-06 11:39:00.072"]'::tsrange),

('["2023-04-06 11:39:03.581","2023-04-19 23:59:59.768"]'::tsrange),

('["2022-08-28 00:19:28.739","2022-08-28 23:59:59.829"]'::tsrange)

) AS x(timestamp_range);

/*

sum_range_interval |

---------------------+

581 days 61:06:36.805|

*/

--> should be 583 days ..


SELECT

upper(timestamp_range) - lower(timestamp_range) AS range_interval

FROM

(

VALUES

('["2021-09-13 10:53:03.668","2022-08-28 00:19:16.212"]'::tsrange),

('["2022-08-29 00:00:03.088","2023-04-06 11:39:00.072"]'::tsrange),

('["2023-04-06 11:39:03.581","2023-04-19 23:59:59.768"]'::tsrange),

('["2022-08-28 00:19:28.739","2022-08-28 23:59:59.829"]'::tsrange)

) AS x(timestamp_range);

/*

range_interval |

---------------------+

348 days 13:26:12.544|

220 days 11:38:56.984|

13 days 12:20:56.187|

23:40:31.09|

*/


SELECT

SUM(range_interval) AS sum_range_interval

FROM

(

VALUES

('348 days 13:26:12.544'::INTERVAL),

('220 days 11:38:56.984'::INTERVAL),

('13 days 12:20:56.187'::INTERVAL),

('23:40:31.09'::INTERVAL)

) AS x(range_interval);

/*

sum_range_interval |

---------------------+

581 days 61:06:36.805|

*/

--> same

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