SilverNarcissus commented on a change in pull request #713: [IOTDB-418] New 
series reader
URL: https://github.com/apache/incubator-iotdb/pull/713#discussion_r379260445
 
 

 ##########
 File path: 
server/src/test/java/org/apache/iotdb/db/integration/IoTDBAggregationIT.java
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 @@ -508,6 +509,57 @@ public void avgSumErrorTest() throws SQLException {
     }
   }
 
+  /**
+   * test aggregation query with more than one functions on one series
+   */
+  @Test
+  public void mergeAggrOnOneSeriesTest() {
 
 Review comment:
   Maybe we need more tests here. Consider the order of columns, mergeable or 
unmergeable columns. Such as following sql:
    "SELECT sum(s0), count(s0), avg(s2), avg(s0) FROM root.vehicle.d0 WHERE 
time >= 6000 AND time <= 9000"
    "SELECT sum(s2), count(s0), avg(s2), avg(s1), count(s2),sum(s0) FROM 
root.vehicle.d0 WHERE time >= 6000 AND time <= 9000"

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