mihaibudiu commented on code in PR #5130:
URL: https://github.com/apache/calcite/pull/5130#discussion_r3668277091
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core/src/main/java/org/apache/calcite/rel/rel2sql/SqlImplementor.java:
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@@ -194,6 +194,8 @@ protected SqlImplementor(SqlDialect dialect) {
public final Result visitRoot(RelNode r) {
List<RelOptRule> rules = new ArrayList<>();
if (!this.dialect.supportsGroupByLiteral()) {
+ rules.add(CoreRules.PROJECT_MERGE);
Review Comment:
It's not obvious to me why this solves the problem. Can you explain?
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