Isn't that expected? Your query will try to update row 3 first and set
the primary key to 5, which in fact would violate the primary key
constraint on that table.
Laurence Dawson wrote:
> And then try an update:
> lstore=> select * from test.test;
> a
> ----
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> 8
> 9
> 10
> (10 rows)
>
> lstore=> update test.test set a = a + 2 where a >= 3;
> ERROR: duplicate key violates unique constraint "pk"
> lstore=>
>
