fhueske commented on code in PR #29060:
URL: https://github.com/apache/flink/pull/29060#discussion_r3904609057
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flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/codegen/GeneratedExpression.scala:
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@@ -56,6 +56,9 @@ case class GeneratedExpression(
*/
def literal: Boolean = literalValue.isDefined
+ /** Whether this expression is statically proven never to be null at
runtime. */
+ def isProvenNotNull: Boolean = nullTerm == GeneratedExpression.NEVER_NULL
Review Comment:
Which expressions are proven not null at runtime if we do not trust the
types?
It would only be literals and expressions on literals, no?
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