suibianwanwank commented on code in PR #4332:
URL: https://github.com/apache/calcite/pull/4332#discussion_r2067767265
##########
core/src/main/java/org/apache/calcite/sql2rel/RelDecorrelator.java:
##########
@@ -3201,6 +3212,61 @@ assert allLessThan(this.oldToNewOutputs.values(),
}
}
+ /**
+ * Check if the field at the given index is non-nullable.
+ *
+ * <p>This method performs a basic check for `null` values in the field.
However, a
+ * `false` result does not necessarily mean that the field contains `null`
values.
+ * It only guarantees that if the result is `true`, the field contains no
`null` values.
+ */
+ private static boolean isFilterNull(RelNode rel, int index) {
Review Comment:
This name seems to express the opposite semantics, when this method returns
'true', the field must not be null. How about `isFieldNotNull`?
--
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]
