[GitHub] [spark] TJX2014 edited a comment on pull request #28819: [SPARK-31980][SQL]Function sequence() fails if start and end of range are equal dates

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TJX2014 edited a comment on pull request #28819:
URL: https://github.com/apache/spark/pull/28819#issuecomment-643740231


   > I think it matches the behaviour with Presto's (see #21155). Shall we check how it works in Presto?
   
   Sure, we can get result from Presto(presto-server-0.236) as follows：
   `
   **presto> select sequence(date('2011-03-01'),date('2011-03-01'),interval '1' year);
       _col0     
    [2011-03-01] 
   (1 row)**
   
   Query 20200614_091013_00013_wnnjv, FINISHED, 1 node
   Splits: 17 total, 17 done (100.00%)
   0:00 [0 rows, 0B] [0 rows/s, 0B/s]
   
   presto> select sequence(date('2011-03-01'),date('2012-03-01'),interval '1' year);
             _col0           
    [2011-03-01, 2012-03-01] 
   (1 row)
   
   Query 20200614_091017_00014_wnnjv, FINISHED, 1 node
   Splits: 17 total, 17 done (100.00%)
   0:00 [0 rows, 0B] [0 rows/s, 0B/s]
   
   presto> select sequence(date('2011-03-01'),date('2010-03-01'),interval '1' year);
   Query 20200614_091021_00015_wnnjv failed: sequence stop value should be greater than or equal to start value if step is greater than zero otherwise stop should be less than or equal to start
   `


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