NobiGo commented on code in PR #3935:
URL: https://github.com/apache/calcite/pull/3935#discussion_r1733771137
##########
core/src/main/java/org/apache/calcite/sql/type/ReturnTypes.java:
##########
@@ -1414,7 +1415,9 @@ private static RelDataType
multivalentStringWithSepSumPrecision(
final RelDataType relDataType =
typeFactory.getTypeSystem().deriveCovarType(typeFactory,
opBinding.getOperandType(0), opBinding.getOperandType(1));
- if (opBinding.getGroupCount() == 0 || opBinding.hasFilter()) {
+ if (opBinding.getGroupCount() == 0 || opBinding.hasFilter()
+ || opBinding.getOperator().kind == SqlKind.COVAR_POP
Review Comment:
According to
https://docs.oracle.com/en/database/oracle/oracle-database/21/sqlrf/COVAR_POP.html.
This function return type is nullable.
```
The function returns a value of type NUMBER. If the function is applied to
an empty set, then it returns null.
```
--
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]
