snuyanzin commented on code in PR #25362:
URL: https://github.com/apache/flink/pull/25362#discussion_r1768355815
##########
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/calcite/FlinkCalciteSqlValidator.java:
##########
@@ -373,20 +375,30 @@ protected void addToSelectList(
final SqlOperator operator = call.getOperator();
if (operator instanceof SqlWindowTableFunction) {
- if (explicitTableArgs.stream().allMatch(Objects::isNull)) {
+ if (tableArgs.stream().allMatch(Objects::isNull)) {
return rewritten;
}
+ final boolean isSessionWindow = isSessionWindow(operator);
final List<SqlIdentifier> descriptors =
call.getOperandList().stream()
.flatMap(FlinkCalciteSqlValidator::extractDescriptors)
.collect(Collectors.toList());
for (int i = 0; i < call.operandCount(); i++) {
- final SqlIdentifier tableArg = explicitTableArgs.get(i);
+ final SqlIdentifier tableArg = tableArgs.get(i);
if (tableArg != null) {
final SqlNode opReplacement = new
ExplicitTableSqlSelect(tableArg, descriptors);
- if (call.operand(i).getKind() ==
SqlKind.ARGUMENT_ASSIGNMENT) {
+ if (isSessionWindow) {
Review Comment:
otherwise SESSION window will lose `PARTITION BY` in plans
as covered by
https://github.com/apache/flink/blob/0e373b20d917a9bcd2b00e32d3ff09b353aef728/flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/plan/stream/sql/WindowTableFunctionTest.scala#L293-L305
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