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create table t1 (
pk int primary key,
a int,
b int,
c char(10),
d decimal(10, 3),
e real
);
insert into t1 values
( 1, 0, 1, 'one', 0.1, 0.001),
( 2, 0, 2, 'two', 0.2, 0.002),
( 3, 0, 3, 'three', 0.3, 0.003),
( 4, 1, 2, 'three', 0.4, 0.004),
( 5, 1, 1, 'two', 0.5, 0.005),
( 6, 1, 1, 'one', 0.6, 0.006),
( 7, 2, NULL, 'n_one', 0.5, 0.007),
( 8, 2, 1, 'n_two', NULL, 0.008),
( 9, 2, 2, NULL, 0.7, 0.009),
(10, 2, 0, 'n_four', 0.8, 0.010),
(11, 2, 10, NULL, 0.9, NULL);
select pk,
nth_value(pk, 1) over (order by pk),
nth_value(pk, 2) over (order by pk),
nth_value(pk, 0) over (order by pk),
nth_value(pk, -1) over (order by pk),
nth_value(pk, -2) over (order by pk)
from t1
order by pk asc;
pk nth_value(pk, 1) over (order by pk) nth_value(pk, 2) over (order by pk) nth_value(pk, 0) over (order by pk) nth_value(pk, -1) over (order by pk) nth_value(pk, -2) over (order by pk)
1 1 NULL NULL NULL NULL
2 1 2 NULL NULL NULL
3 1 2 NULL NULL NULL
4 1 2 NULL NULL NULL
5 1 2 NULL NULL NULL
6 1 2 NULL NULL NULL
7 1 2 NULL NULL NULL
8 1 2 NULL NULL NULL
9 1 2 NULL NULL NULL
10 1 2 NULL NULL NULL
11 1 2 NULL NULL NULL
select pk,
nth_value(pk, pk) over (order by pk),
nth_value(pk / 0.1, pk) over (order by pk)
from t1
order by pk asc;
pk nth_value(pk, pk) over (order by pk) nth_value(pk / 0.1, pk) over (order by pk)
1 1 10.0000
2 2 20.0000
3 3 30.0000
4 4 40.0000
5 5 50.0000
6 6 60.0000
7 7 70.0000
8 8 80.0000
9 9 90.0000
10 10 100.0000
11 11 110.0000
select pk,
a,
nth_value(pk, pk) over (partition by a order by pk),
nth_value(pk, a + 1) over (partition by a order by pk)
from t1
order by pk asc;
pk a nth_value(pk, pk) over (partition by a order by pk) nth_value(pk, a + 1) over (partition by a order by pk)
1 0 1 1
2 0 2 1
3 0 3 1
4 1 NULL NULL
5 1 NULL 5
6 1 NULL 5
7 2 NULL NULL
8 2 NULL NULL
9 2 NULL 9
10 2 NULL 9
11 2 NULL 9
select pk,
a,
nth_value(pk, 1) over (partition by a order by pk ROWS between 1 preceding and 1 following)
from t1;
pk a nth_value(pk, 1) over (partition by a order by pk ROWS between 1 preceding and 1 following)
1 0 1
2 0 1
3 0 2
4 1 4
5 1 4
6 1 5
7 2 7
8 2 7
9 2 8
10 2 9
11 2 10
select pk,
a,
nth_value(a, 1) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 2) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 3) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 4) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 5) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 6) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 7) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 8) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 9) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 10) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 11) over (order by a RANGE BETWEEN 1 preceding and 1 following),
nth_value(a, 12) over (order by a RANGE BETWEEN 1 preceding and 1 following)
from t1
order by pk asc;
pk a nth_value(a, 1) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 2) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 3) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 4) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 5) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 6) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 7) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 8) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 9) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 10) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 11) over (order by a RANGE BETWEEN 1 preceding and 1 following) nth_value(a, 12) over (order by a RANGE BETWEEN 1 preceding and 1 following)
1 0 0 0 0 1 1 1 NULL NULL NULL NULL NULL NULL
2 0 0 0 0 1 1 1 NULL NULL NULL NULL NULL NULL
3 0 0 0 0 1 1 1 NULL NULL NULL NULL NULL NULL
4 1 0 0 0 1 1 1 2 2 2 2 2 NULL
5 1 0 0 0 1 1 1 2 2 2 2 2 NULL
6 1 0 0 0 1 1 1 2 2 2 2 2 NULL
7 2 1 1 1 2 2 2 2 2 NULL NULL NULL NULL
8 2 1 1 1 2 2 2 2 2 NULL NULL NULL NULL
9 2 1 1 1 2 2 2 2 2 NULL NULL NULL NULL
10 2 1 1 1 2 2 2 2 2 NULL NULL NULL NULL
11 2 1 1 1 2 2 2 2 2 NULL NULL NULL NULL
drop table t1;
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