回答編集履歴
6
extractでは1分1秒違いのケースに対応できないのを修正
test
CHANGED
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@@ -26,6 +26,8 @@
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26
26
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27
27
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from tmp
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28
28
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29
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-
where
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29
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+
where time = ltime
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30
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+
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31
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+
or time = ltime + interval '1 second'
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30
32
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31
33
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```
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5
ちょっと修正
test
CHANGED
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@@ -16,7 +16,7 @@
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16
16
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17
17
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SELECT ord,time,
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18
18
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19
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-
lag(time) over(partition by ord order by
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19
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+
lag(time) over(partition by product,ord order by time,machine) as ltime
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20
20
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21
21
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FROM t
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22
22
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4
productをPartionBy句に追加
test
CHANGED
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@@ -16,7 +16,7 @@
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16
16
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17
17
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SELECT ord,time,
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18
18
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19
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-
lag(time) over(partition by ord order by time,machine) as ltime
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19
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+
lag(time) over(partition by ord order by product,time,machine) as ltime
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20
20
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21
21
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FROM t
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22
22
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3
ctidではなくmachineを使用
test
CHANGED
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@@ -16,7 +16,7 @@
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16
16
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17
17
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SELECT ord,time,
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18
18
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19
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-
lag(time) over(partition by ord order by time,c
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19
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+
lag(time) over(partition by ord order by time,machine) as ltime
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20
20
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21
21
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FROM t
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22
22
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2
一意性のあるソートにするため、ctidをソートキーに追加
test
CHANGED
|
@@ -16,7 +16,7 @@
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16
16
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17
17
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SELECT ord,time,
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18
18
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19
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-
lag(time) over(partition by ord order by time) as ltime
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19
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+
lag(time) over(partition by ord order by time,ctid) as ltime
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20
20
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21
21
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FROM t
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22
22
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@@ -28,6 +28,4 @@
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28
28
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29
29
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where extract(day from time - ltime) <= 1;
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30
30
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31
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-
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32
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-
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33
31
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```
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1
修正
test
CHANGED
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@@ -1,3 +1,33 @@
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1
1
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GROUP BY order,(timeの秒が奇数なら1秒引く)
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2
2
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3
3
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でいいのでは？
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4
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+
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5
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+
と思ったけど駄目ですね。
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6
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+
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7
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+
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8
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+
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9
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+
律儀にlagを使えば良さそうです。
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10
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+
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11
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+
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12
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+
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13
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+
```sql
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14
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+
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15
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+
with tmp as(
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16
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+
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17
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+
SELECT ord,time,
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18
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+
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19
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+
lag(time) over(partition by ord order by time) as ltime
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20
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+
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21
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+
FROM t
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22
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+
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23
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+
where ok)
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24
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+
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25
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+
select count(*)
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26
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+
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27
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+
from tmp
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28
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+
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29
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+
where extract(day from time - ltime) <= 1;
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30
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+
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31
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+
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32
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+
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33
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+
```
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