starocean999 commented on code in PR #65682:
URL: https://github.com/apache/doris/pull/65682#discussion_r3702946070
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fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/joinorder/hypergraphv2/HyperGraph.java:
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@@ -385,15 +602,57 @@ public boolean addAlias(Alias alias, long subTreeNodes) {
if (bitmap == 0) {
bitmap = subTreeNodes;
addToReplaceMap = false;
- List<NamedExpression> aliasList =
nodeToLiteralAlias.get(bitmap);
- if (aliasList == null) {
- aliasList = new ArrayList<>(1);
- nodeToLiteralAlias.put(bitmap, aliasList);
+ // Constant aliases go into the current Project layer (set up
by
+ // buildForDPhyper) and will be flushed to
nodeToProjectedAliases
+ // keyed by the layer's subtree bitmap after the Project is
processed.
+ if (currentProjectedAliasLayer != null) {
+ currentProjectedAliasLayer.add(alias);
}
- aliasList.add(alias);
}
Preconditions.checkArgument(bitmap > 0, "slot must belong to some
table");
- slotToHyperNodeMap.put(aliasSlot, bitmap);
+ boolean mustStayInCurrentAliasLayer = isNullableSide &&
!(alias.child() instanceof Slot);
Review Comment:
the nullable info will be reset by AdjustNullable after dphyper
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