回答編集履歴
4
修正
answer
CHANGED
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@@ -3,7 +3,7 @@
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3
3
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```sql
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4
4
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SELECT
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5
5
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t.sabun
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6
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-
,
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6
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+
,count(*)
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7
7
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FROM
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8
8
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(
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9
9
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SELECT
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3
修正
answer
CHANGED
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@@ -20,6 +20,6 @@
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20
20
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AND t_r.id = t_s.id
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21
21
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AND t_r.name = t_s.name
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22
22
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) AS t
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23
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-
GROUP BY sabun
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23
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+
GROUP BY t.sabun
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24
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-
ORDER BY sabun
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24
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+
ORDER BY t.sabun
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25
25
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```
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2
修正
answer
CHANGED
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@@ -2,8 +2,8 @@
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2
2
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3
3
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```sql
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4
4
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SELECT
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5
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-
sabun
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5
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+
t.sabun
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6
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-
,count(*)
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6
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+
,t.count(*)
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7
7
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FROM
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8
8
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(
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9
9
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SELECT
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@@ -19,6 +19,7 @@
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19
19
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AND t_s.joukyou = 'soushin'
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20
20
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AND t_r.id = t_s.id
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21
21
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AND t_r.name = t_s.name
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22
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-
)
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22
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+
) AS t
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23
23
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GROUP BY sabun
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24
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+
ORDER BY sabun
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24
25
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```
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1
追記
answer
CHANGED
|
@@ -1,17 +1,24 @@
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1
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-
自己結合でIDとNAMEが同じ受信レコードと送信レコードを結合してください。
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1
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+
自己結合でIDとNAMEが同じ受信レコードと送信レコードを結合し、その結果をGROUP BYしてください。
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2
2
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3
3
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```sql
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4
4
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SELECT
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5
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-
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|
5
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+
sabun
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6
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-
,
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6
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+
,count(*)
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7
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-
,t_r.jikan AS jushin_jikan
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8
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-
,t_s.jikan AS soushin_jikan
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9
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-
,DATEDIFF(millisecond, t_r.jikan, t_r.jikan) AS sabun
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10
7
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FROM
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8
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+
(
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9
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+
SELECT
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10
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+
t_r.id
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11
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+
,t_r.name
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12
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+
,t_r.jikan AS jushin_jikan
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13
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+
,t_s.jikan AS soushin_jikan
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14
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+
,DATEDIFF(millisecond, t_r.jikan, t_r.jikan) AS sabun
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15
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+
FROM
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11
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-
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|
16
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+
tablename AS t_s
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12
|
-
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17
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+
INNER JOIN tablename AS t_r
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13
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-
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|
18
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+
ON t_r.joukyou = 'jushin'
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14
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-
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|
19
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+
AND t_s.joukyou = 'soushin'
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15
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-
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20
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+
AND t_r.id = t_s.id
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16
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-
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|
21
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+
AND t_r.name = t_s.name
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22
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+
)
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23
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+
GROUP BY sabun
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17
24
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```
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