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  1. MariaDB Server
  2. MDEV-16489

when lead() returns null on a datetime field, the result is treated as the literal string '[NULL]'

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      /* when lead() returns null on a datetime field, the result is treated as the literal string '[NULL]' */
       
      	create temporary table d1(d datetime);
      	insert into d1 values ('2018-01-01 00:00:00'),('2018-02-01 00:00:00');
      	
      	/* null record is not returned */
      	select *
      	from 
      		(
      			select *, lead(d) over (order by d) as x from d1
      		) a
      	where x is null
      	
      	/* null record is returned when treated as a string */
      	select *
      	from 
      		(
      			select *, lead(d) over (order by d) as x from d1
      		) a
      	where x = '[NULL]'
      	
      	drop table d1
      
      

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              • Assignee:
                bar Alexander Barkov
                Reporter:
                corbin_mdb Corbin Bohne
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                • Created:
                  Updated:
                  Resolved: