回答編集履歴
5
戻し
test
CHANGED
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@@ -46,31 +46,41 @@
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```SQL
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49
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with UA as (
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select U.id, U.group_name, U.name, A.height
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from countries as U
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inner join players as A
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on U.id = A.country_id
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)
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select group_name, name
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-
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, avg(height),
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, max(height),
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-
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, sum(case when height <= 170 then 1 else 0 end) as under170
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-
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, group_avg_height
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from (
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SELECT *
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, (select avg(height) from UA
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-
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where id=base.ID and group_name=base.group_name
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-
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) as group_avg_height
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-
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FROM UA as base
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) U inner join players as A
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-
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-
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) UA
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GROUP by group_name, group_avg_height, name
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4
推敲
test
CHANGED
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@@ -14,9 +14,9 @@
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select group_name, name
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, avg(height)
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, avg(height)
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, max(height)
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, max(height)
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, sum(case when height <= 170 then 1 else 0 end) as under170
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@@ -48,9 +48,9 @@
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select group_name, name
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, avg(height)
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, avg(height)
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, max(height)
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, max(height)
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, sum(case when height <= 170 then 1 else 0 end) as under170
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56
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3
推敲
test
CHANGED
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@@ -46,18 +46,6 @@
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```SQL
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48
48
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49
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-
with UA as (
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50
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-
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51
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-
select U.id, U.group_name, U.name, A.height
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52
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-
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53
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-
from countries as U
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54
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-
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55
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-
inner join players as A
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56
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-
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on U.id = A.country_id
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-
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)
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-
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select group_name, name
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, avg(height),
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@@ -70,17 +58,19 @@
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from (
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SELECT *
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SELECT *
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, (select avg(height) from
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, (select avg(height) from players
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where id=
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where country_id=U.id
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-
) as group_avg_height
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) as group_avg_height
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80
68
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-
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from countries U
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70
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) U inner join players as A
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-
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on U.id = A.country_id
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84
74
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85
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GROUP by group_name, group_avg_height, name
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86
76
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2
推敲
test
CHANGED
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@@ -24,7 +24,7 @@
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24
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from (
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SELECT U.group_name, U.name, A.height
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SELECT U.group_name, U.name, A.height
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, avg(height) over(partition by group_name) as group_avg_height
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1
追記
test
CHANGED
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@@ -1 +1,89 @@
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1
1
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group_nameのみの集計を行ったものとjoinすれば良いと思います。
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3
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4
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5
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### 追記
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6
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7
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group_nameのみの集計を行うサンプルです
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8
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9
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10
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11
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**Window関数**
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12
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13
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```SQL
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14
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15
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select group_name, name
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16
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+
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17
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+
, avg(height),
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18
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+
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19
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, max(height),
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20
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+
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21
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, sum(case when height <= 170 then 1 else 0 end) as under170
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22
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+
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, group_avg_height
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24
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+
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25
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from (
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27
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SELECT U.group_name, U.name, A.height, A.country_id
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28
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+
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29
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+
, avg(height) over(partition by group_name) as group_avg_height
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30
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+
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31
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from countries as U
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32
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+
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33
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inner join players as A
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34
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+
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on U.id = A.country_id
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36
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+
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) UA
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38
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+
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39
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GROUP by group_name, group_avg_height, name
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40
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41
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ORDER by group_name, group_avg_height DESC
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42
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+
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43
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```
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44
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+
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45
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+
**相関問合せ**
|
|
46
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+
|
|
47
|
+
```SQL
|
|
48
|
+
|
|
49
|
+
with UA as (
|
|
50
|
+
|
|
51
|
+
select U.id, U.group_name, U.name, A.height
|
|
52
|
+
|
|
53
|
+
from countries as U
|
|
54
|
+
|
|
55
|
+
inner join players as A
|
|
56
|
+
|
|
57
|
+
on U.id = A.country_id
|
|
58
|
+
|
|
59
|
+
)
|
|
60
|
+
|
|
61
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+
select group_name, name
|
|
62
|
+
|
|
63
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+
, avg(height),
|
|
64
|
+
|
|
65
|
+
, max(height),
|
|
66
|
+
|
|
67
|
+
, sum(case when height <= 170 then 1 else 0 end) as under170
|
|
68
|
+
|
|
69
|
+
, group_avg_height
|
|
70
|
+
|
|
71
|
+
from (
|
|
72
|
+
|
|
73
|
+
SELECT *
|
|
74
|
+
|
|
75
|
+
, (select avg(height) from UA
|
|
76
|
+
|
|
77
|
+
where id=base.ID and group_name=base.group_name
|
|
78
|
+
|
|
79
|
+
) as group_avg_height
|
|
80
|
+
|
|
81
|
+
FROM UA as base
|
|
82
|
+
|
|
83
|
+
) UA
|
|
84
|
+
|
|
85
|
+
GROUP by group_name, group_avg_height, name
|
|
86
|
+
|
|
87
|
+
ORDER by group_name, group_avg_height DESC
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|
88
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+
|
|
89
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+
```
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