haimeiguo opened a new pull request #2571:
URL: https://github.com/apache/iotdb/pull/2571
currently when use group by month and starttime is in February, there is a
calculation error.
'''
IoTDB> select count(*) from root.sg1 group by ([2020-02-13, 2020-03-13), 1mo)
+----+---------------------+---------------------+---------------------+
|Time|count(root.sg1.d1.s4)|count(root.sg1.d1.s5)|count(root.sg1.d1.s2)|
+----+---------------------+---------------------+---------------------+
+----+---------------------+---------------------+---------------------+
IoTDB> select count(*) from root.sg1 group by ([2020-04-01, 2020-05-01), 1mo)
+-----------------------------+---------------------+---------------------+---------------------+
|
Time|count(root.sg1.d1.s4)|count(root.sg1.d1.s5)|count(root.sg1.d1.s2)|
+-----------------------------+---------------------+---------------------+---------------------+
|2020-04-01T00:00:00.000+08:00| 0| 0|
0|
+-----------------------------+---------------------+---------------------+---------------------+
Total line number = 1
It costs 0.003s
'''
but it should be
'''
IoTDB> select count(*) from root.sg1 group by ([2020-02-01, 2020-03-01), 1mo)
+-----------------------------+---------------------+---------------------+---------------------+
|
Time|count(root.sg1.d1.s4)|count(root.sg1.d1.s5)|count(root.sg1.d1.s2)|
+-----------------------------+---------------------+---------------------+---------------------+
|2020-02-01T00:00:00.000+08:00| 0| 0|
0|
+-----------------------------+---------------------+---------------------+---------------------+
'''
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