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create table t1 (
pk int primary key,
a int,
b int
);
insert into t1 values
(11 , 0, 10),
(12 , 0, 10),
(13 , 1, 10),
(14 , 1, 10),
(18 , 2, 10),
(15 , 2, 20),
(16 , 2, 20),
(17 , 2, 20),
(19 , 4, 20),
(20 , 4, 20);
select pk, a, b, ntile(-1) over (order by a)
from t1;
ERROR HY000: Argument of NTILE must be greater than 0
select pk, a, b,
ntile(0) over (order by a)
from t1;
ERROR HY000: Argument of NTILE must be greater than 0
select pk, a, b,
ntile(1) over (order by pk)
from t1;
pk a b ntile(1) over (order by pk)
11 0 10 1
12 0 10 1
13 1 10 1
14 1 10 1
15 2 20 1
16 2 20 1
17 2 20 1
18 2 10 1
19 4 20 1
20 4 20 1
select pk, a, b,
ntile(2) over (order by pk)
from t1;
pk a b ntile(2) over (order by pk)
11 0 10 1
12 0 10 1
13 1 10 1
14 1 10 1
15 2 20 1
16 2 20 2
17 2 20 2
18 2 10 2
19 4 20 2
20 4 20 2
select pk, a, b,
ntile(3) over (order by pk)
from t1;
pk a b ntile(3) over (order by pk)
11 0 10 1
12 0 10 1
13 1 10 1
14 1 10 1
15 2 20 2
16 2 20 2
17 2 20 2
18 2 10 3
19 4 20 3
20 4 20 3
select pk, a, b,
ntile(4) over (order by pk)
from t1;
pk a b ntile(4) over (order by pk)
11 0 10 1
12 0 10 1
13 1 10 1
14 1 10 2
15 2 20 2
16 2 20 2
17 2 20 3
18 2 10 3
19 4 20 4
20 4 20 4
select pk, a, b,
ntile(5) over (order by pk)
from t1;
pk a b ntile(5) over (order by pk)
11 0 10 1
12 0 10 1
13 1 10 2
14 1 10 2
15 2 20 3
16 2 20 3
17 2 20 4
18 2 10 4
19 4 20 5
20 4 20 5
select pk, a, b,
ntile(6) over (order by pk)
from t1;
pk a b ntile(6) over (order by pk)
11 0 10 1
12 0 10 1
13 1 10 2
14 1 10 2
15 2 20 3
16 2 20 3
17 2 20 4
18 2 10 4
19 4 20 5
20 4 20 6
select pk, a, b,
ntile(7) over (order by pk)
from t1;
pk a b ntile(7) over (order by pk)
11 0 10 1
12 0 10 1
13 1 10 2
14 1 10 2
15 2 20 3
16 2 20 3
17 2 20 4
18 2 10 5
19 4 20 6
20 4 20 7
select pk, a, b,
ntile(8) over (order by pk)
from t1;
pk a b ntile(8) over (order by pk)
11 0 10 1
12 0 10 1
13 1 10 2
14 1 10 2
15 2 20 3
16 2 20 4
17 2 20 5
18 2 10 6
19 4 20 7
20 4 20 8
select pk, a, b,
ntile(9) over (order by pk)
from t1;
pk a b ntile(9) over (order by pk)
11 0 10 1
12 0 10 1
13 1 10 2
14 1 10 3
15 2 20 4
16 2 20 5
17 2 20 6
18 2 10 7
19 4 20 8
20 4 20 9
select pk, a, b,
ntile(10) over (order by pk)
from t1;
pk a b ntile(10) over (order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
15 2 20 5
16 2 20 6
17 2 20 7
18 2 10 8
19 4 20 9
20 4 20 10
select pk, a, b,
ntile(11) over (order by pk)
from t1;
pk a b ntile(11) over (order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
15 2 20 5
16 2 20 6
17 2 20 7
18 2 10 8
19 4 20 9
20 4 20 10
select pk, a, b,
ntile(20) over (order by pk)
from t1;
pk a b ntile(20) over (order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
15 2 20 5
16 2 20 6
17 2 20 7
18 2 10 8
19 4 20 9
20 4 20 10
select pk, a, b,
ntile(1) over (partition by b order by pk)
from t1;
pk a b ntile(1) over (partition by b order by pk)
11 0 10 1
12 0 10 1
13 1 10 1
14 1 10 1
18 2 10 1
15 2 20 1
16 2 20 1
17 2 20 1
19 4 20 1
20 4 20 1
select pk, a, b,
ntile(2) over (partition by b order by pk)
from t1;
pk a b ntile(2) over (partition by b order by pk)
11 0 10 1
12 0 10 1
13 1 10 1
14 1 10 2
18 2 10 2
15 2 20 1
16 2 20 1
17 2 20 1
19 4 20 2
20 4 20 2
select pk, a, b,
ntile(3) over (partition by b order by pk)
from t1;
pk a b ntile(3) over (partition by b order by pk)
11 0 10 1
12 0 10 1
13 1 10 2
14 1 10 2
18 2 10 3
15 2 20 1
16 2 20 1
17 2 20 2
19 4 20 2
20 4 20 3
select pk, a, b,
ntile(4) over (partition by b order by pk)
from t1;
pk a b ntile(4) over (partition by b order by pk)
11 0 10 1
12 0 10 1
13 1 10 2
14 1 10 3
18 2 10 4
15 2 20 1
16 2 20 1
17 2 20 2
19 4 20 3
20 4 20 4
select pk, a, b,
ntile(5) over (partition by b order by pk)
from t1;
pk a b ntile(5) over (partition by b order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
18 2 10 5
15 2 20 1
16 2 20 2
17 2 20 3
19 4 20 4
20 4 20 5
select pk, a, b,
ntile(6) over (partition by b order by pk)
from t1;
pk a b ntile(6) over (partition by b order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
18 2 10 5
15 2 20 1
16 2 20 2
17 2 20 3
19 4 20 4
20 4 20 5
select pk, a, b,
ntile(7) over (partition by b order by pk)
from t1;
pk a b ntile(7) over (partition by b order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
18 2 10 5
15 2 20 1
16 2 20 2
17 2 20 3
19 4 20 4
20 4 20 5
select pk, a, b,
ntile(8) over (partition by b order by pk)
from t1;
pk a b ntile(8) over (partition by b order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
18 2 10 5
15 2 20 1
16 2 20 2
17 2 20 3
19 4 20 4
20 4 20 5
select pk, a, b,
ntile(9) over (partition by b order by pk)
from t1;
pk a b ntile(9) over (partition by b order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
18 2 10 5
15 2 20 1
16 2 20 2
17 2 20 3
19 4 20 4
20 4 20 5
select pk, a, b,
ntile(10) over (partition by b order by pk)
from t1;
pk a b ntile(10) over (partition by b order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
18 2 10 5
15 2 20 1
16 2 20 2
17 2 20 3
19 4 20 4
20 4 20 5
select pk, a, b,
ntile(11) over (partition by b order by pk)
from t1;
pk a b ntile(11) over (partition by b order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
18 2 10 5
15 2 20 1
16 2 20 2
17 2 20 3
19 4 20 4
20 4 20 5
select pk, a, b,
ntile(20) over (partition by b order by pk)
from t1;
pk a b ntile(20) over (partition by b order by pk)
11 0 10 1
12 0 10 2
13 1 10 3
14 1 10 4
18 2 10 5
15 2 20 1
16 2 20 2
17 2 20 3
19 4 20 4
20 4 20 5
select pk, a, b,
ntile(1 + 3) over (partition by b order by pk)
from t1;
pk a b ntile(1 + 3) over (partition by b order by pk)
11 0 10 1
12 0 10 1
13 1 10 2
14 1 10 3
18 2 10 4
15 2 20 1
16 2 20 1
17 2 20 2
19 4 20 3
20 4 20 4
select pk, a, b,
ntile((select 4)) over (partition by b order by pk)
from t1;
pk a b ntile((select 4)) over (partition by b order by pk)
11 0 10 1
12 0 10 1
13 1 10 2
14 1 10 3
18 2 10 4
15 2 20 1
16 2 20 1
17 2 20 2
19 4 20 3
20 4 20 4
select t1.a from t1 where pk = 11;
a
0
select pk, a, b,
ntile((select a from t1 where pk=11)) over (partition by b order by pk)
from t1;
ERROR HY000: Argument of NTILE must be greater than 0
select t1.a from t1 where pk = 13;
a
1
select pk, a, b,
ntile((select a from t1 where pk=13)) over (partition by b order by pk)
from t1;
pk a b ntile((select a from t1 where pk=13)) over (partition by b order by pk)
11 0 10 1
12 0 10 1
13 1 10 1
14 1 10 1
18 2 10 1
15 2 20 1
16 2 20 1
17 2 20 1
19 4 20 1
20 4 20 1
explain
select pk, a, b,
ntile((select a from t1 where pk=13)) over (partition by b order by pk)
from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 10 Using temporary
2 SUBQUERY t1 const PRIMARY PRIMARY 4 const 1
select a from t1;
a
0
0
1
1
2
2
2
2
4
4
select pk, a, b,
ntile((select a from t1)) over (partition by b order by pk)
from t1;
ERROR 21000: Subquery returns more than 1 row
drop table t1;
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