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Author: krooswu

core/src/main/java/org/apache/calcite/sql/dialect/ClickHouseSqlDialect.java

@@ -19,7 +19,6 @@
 import org.apache.calcite.avatica.util.TimeUnitRange;
 import org.apache.calcite.config.NullCollation;
 import org.apache.calcite.rel.RelNode;
-import org.apache.calcite.rel.core.Aggregate;
 import org.apache.calcite.rel.core.Correlate;
 import org.apache.calcite.rel.core.Filter;
 import org.apache.calcite.rel.core.Join;