Steve Carlin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/22086 )

Change subject: IMPALA-13523: Decimal Precision needs to be in return type
......................................................................


Patch Set 2:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/22086/2/java/calcite-planner/src/main/java/org/apache/impala/calcite/operators/CommonOperatorFunctions.java
File 
java/calcite-planner/src/main/java/org/apache/impala/calcite/operators/CommonOperatorFunctions.java:

http://gerrit.cloudera.org:8080/#/c/22086/2/java/calcite-planner/src/main/java/org/apache/impala/calcite/operators/CommonOperatorFunctions.java@136
PS2, Line 136:     for (RelDataType r : operandTypes) {
             :       if (r.getSqlTypeName() == SqlTypeName.DECIMAL) {
             :         return r;
             :       }
             :     }
> Yeah, it turns out my scenario was more obscure than I realized.
I originally saw that greatest/least function, but in the prototype, it only 
had one arg.  Sigh, but yeah, it's a "vararg" which takes multiple params.

The mod one is already taken into account with the binary operations.

But the greatest/least functions were crashing.

I made a more general change to make sure casting is done to the return type in 
the case of "case" statements and these varargs statements.

I wasn't quite sure how to special case the greatest/least functions but felt 
the varargs way was the most generic, since any varargs function will probably 
require the decimal types to be the same.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ie10521b587a74930a01c08b711364f897bb2dc33
Gerrit-Change-Number: 22086
Gerrit-PatchSet: 2
Gerrit-Owner: Steve Carlin <[email protected]>
Gerrit-Reviewer: Aman Sinha <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Reviewer: Steve Carlin <[email protected]>
Gerrit-Comment-Date: Fri, 24 Jan 2025 20:47:58 +0000
Gerrit-HasComments: Yes

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