zstan commented on code in PR #13464:
URL: https://github.com/apache/ignite/pull/13464#discussion_r3772620122
##########
modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/rule/SortConverterRule.java:
##########
@@ -101,4 +113,44 @@ public interface Config extends RelRule.Config {
call.transformTo(new IgniteSort(cluster, outTraits, input,
sort.getCollation(), false));
}
}
+
+ /** Returns {@code true} if FETCH can be safely pushed to the sort. */
+ private static boolean canPushLimit(Sort sort) {
+ RexNode fetch = sort.fetch;
+
+ // A non-deterministic FETCH must be evaluated only once by the outer
IgniteLimit.
+ if (!RexUtil.isDeterministic(fetch))
+ return false;
+
+ if (!RexUtil.isConstant(fetch) || containsDynamicParameter(fetch))
Review Comment:
wht you wan\'`t push down dyn param ? it differs from previous behavior
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