alanredsheep opened a new issue, #9296: URL: https://github.com/apache/incubator-doris/issues/9296
### Search before asking - [X] I had searched in the [issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and found no similar issues. ### Version 0.15 ### What's Wrong? ```SQL # doris 0.15 # timestampdiff between 1981-09-11 and 2022-04-28 should be 40 years SELECT TIMESTAMPDIFF(YEAR,DATE('1981-09-11'),'2022-04-28') AS `date-str`, TIMESTAMPDIFF(YEAR,'1981-09-11','2022-04-28') AS `str-str`, TIMESTAMPDIFF(YEAR,DATE('1981-09-11'),DATE('2022-04-28')) AS `date-date`, TIMESTAMPDIFF(YEAR,'1981-09-11',DATE('2022-04-28')) AS `str-date` # while the result is date-str str-str date-date str-date 41 40 41 41 # timestampdiff between 1981-04-11 and 2022-04-28 should be 41 years SELECT TIMESTAMPDIFF(YEAR,DATE('1981-09-11'),'2022-04-28') AS `date-str`, TIMESTAMPDIFF(YEAR,'1981-09-11','2022-04-28') AS `str-str`, TIMESTAMPDIFF(YEAR,DATE('1981-04-11'),DATE('2022-04-28')) AS `date-date`, TIMESTAMPDIFF(YEAR,'1981-04-11',DATE('2022-04-28')) AS `str-date` # while the result is date-str str-str date-date str-date 41 40 41 41 ### What You Expected? timestampdiff between 1981-09-11 and 2022-04-28 should be 40 year timestampdiff between 1981-04-11 and 2022-04-28 should be 41 year This also happens when unit is MONTH or DAY. ### How to Reproduce? _No response_ ### Anything Else? _No response_ ### Are you willing to submit PR? - [ ] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org