BiteTheDDDDt opened a new issue #7044: URL: https://github.com/apache/incubator-doris/issues/7044
### 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. ### Description Cast date to datetime is useless cast. ### Use case ```sql +------------------+-------------+------+-------+---------+-------+ | Field | Type | Null | Key | Default | Extra | | lo_commitdate | INT | No | false | NULL | NONE | +------------------+-------------+------+-------+---------+-------+ select sum(cast (cast(lo_commitdate as date) <= cast(lo_commitdate as date) as tinyint)) from lineorder; ``` At this case, lo_commitdate will be cast like `INT -> DATE -> DATETIME`. We can just do compute betwheen two date type elements, it can speed up `50%` this query. ### Related issues _No response_ ### Are you willing to submit PR? - [X] 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 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
