hsyuan commented on a change in pull request #1884:
URL: https://github.com/apache/calcite/pull/1884#discussion_r416298547
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File path: core/src/main/java/org/apache/calcite/rel/RelCollationTraitDef.java
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@@ -61,18 +65,21 @@ public RelCollation getDefault() {
public RelNode convert(
RelOptPlanner planner,
+ RelBuilder builder,
RelNode rel,
RelCollation toCollation,
+ Convention toConvention,
Review comment:
You can use rel.getConvention() to get the convention info.
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