create table sequence (
id int not null primary key
);
insert into sequence(id) values
(1), (2), (3), (4), (6), (7), (8), (9),
(10), (15), (16), (17), (18), (19), (20);
Find Missing Sequence No in table
select l.id + 1 as start
from sequence as l
left outer join sequence as r on l.id + 1 = r.id
where r.id is null;
OUTPUT-
start
|
5
|
11
|
21
|
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