twalthr commented on a change in pull request #19137:
URL: https://github.com/apache/flink/pull/19137#discussion_r831236217
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File path:
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/calcite/FlinkRelBuilder.java
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@@ -105,6 +116,55 @@ public static RelBuilderFactory proto(Context context) {
};
}
+ /**
+ * {@link RelBuilder#functionScan(SqlOperator, int, Iterable)} cannot work
smoothly with aliases
+ * which is why we implement a custom one. The method is static because
some {@link RelOptRule}s
+ * doesn't use {@link FlinkRelBuilder}.
+ */
+ @SuppressWarnings({"rawtypes", "unchecked"})
+ public static RelBuilder pushFunctionScan(
+ RelBuilder relBuilder,
+ SqlOperator operator,
+ int inputCount,
+ Iterable<? extends RexNode> operands,
Review comment:
it was necessary in the first PoC but now it isn't anymore :)
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