lewiszlw opened a new issue, #18975: URL: https://github.com/apache/datafusion/issues/18975
### Describe the bug Execute below sqls in datafusion-cli ``` create table t (a int); select max(a) as a1, max(cast(a, bigint)) as a2 from t; ``` will get error: `Schema error: Schema contains duplicate unqualified field name "max(t.a)"`. I tried in postgres and it won't fail. I've found root cause. it's due to aggregate plan output schema building https://github.com/apache/datafusion/blob/main/datafusion/expr/src/logical_plan/plan.rs#L3492. It will call SchemaDisplay code. https://github.com/apache/datafusion/blob/52583528087362384be737be37c7ef093e7aa847/datafusion/expr/src/expr.rs#L2799-L2802 The schema name of cast expr is same with column expr. ### To Reproduce _No response_ ### Expected behavior _No response_ ### Additional context _No response_ -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
