Github user sunjincheng121 commented on a diff in the pull request:
https://github.com/apache/flink/pull/3547#discussion_r106195520
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/aggregate/AggregateUtil.scala
---
@@ -19,33 +19,124 @@ package org.apache.flink.table.runtime.aggregate
import java.util
-import org.apache.calcite.rel.`type`._
+import scala.collection.JavaConversions.asScalaBuffer
+import scala.collection.mutable.ArrayBuffer
+
+import org.apache.calcite.rel.RelNode
+import org.apache.calcite.rel.`type`.RelDataType
import org.apache.calcite.rel.core.AggregateCall
+import org.apache.calcite.rex.RexInputRef
+import org.apache.calcite.rex.RexLiteral
+import org.apache.calcite.rex.RexWindowBound
+import org.apache.calcite.sql.SqlAggFunction
+import org.apache.calcite.sql.SqlKind
import org.apache.calcite.sql.`type`.SqlTypeName
-import org.apache.calcite.sql.`type`.SqlTypeName._
-import org.apache.calcite.sql.fun._
-import org.apache.calcite.sql.{SqlAggFunction, SqlKind}
-import org.apache.flink.streaming.api.functions.ProcessFunction
+import org.apache.calcite.sql.`type`.SqlTypeName.BIGINT
+import org.apache.calcite.sql.`type`.SqlTypeName.BOOLEAN
+import org.apache.calcite.sql.`type`.SqlTypeName.DECIMAL
+import org.apache.calcite.sql.`type`.SqlTypeName.DOUBLE
+import org.apache.calcite.sql.`type`.SqlTypeName.FLOAT
+import org.apache.calcite.sql.`type`.SqlTypeName.INTEGER
+import org.apache.calcite.sql.`type`.SqlTypeName.SMALLINT
+import org.apache.calcite.sql.`type`.SqlTypeName.TINYINT
--- End diff --
Can you remove those unused import ?
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