回答編集履歴
3
推敲
test
CHANGED
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@@ -30,7 +30,7 @@
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30
30
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31
31
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)
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32
32
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33
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-
select
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33
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+
select count(*)
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34
34
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35
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from (values (0),(1),(2)) as rand_test(testid)
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36
36
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2
推敲
test
CHANGED
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@@ -34,8 +34,8 @@
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34
34
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35
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from (values (0),(1),(2)) as rand_test(testid)
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36
36
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37
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-
inner join rand
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37
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+
inner join rand
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38
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39
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-
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39
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on rand_test.testid=rand.random_value
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40
40
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41
41
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```
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1
追記
test
CHANGED
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@@ -13,3 +13,29 @@
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13
13
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where testid =(select trunc(random() * 3))
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```
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16
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+
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17
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+
追記
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18
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+
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19
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+
--
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20
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+
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21
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+
試してみたら、サブクエリーでは駄目でしたね。
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22
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+
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23
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+
With式なら大丈夫でした。
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24
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25
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+
```SQL
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26
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+
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27
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+
with rand as (
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28
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+
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29
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+
select trunc(random() * 3) as random_value
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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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+
select testid , random_value
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34
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+
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35
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from (values (0),(1),(2)) as rand_test(testid)
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36
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+
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37
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+
inner join rand
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38
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+
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39
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on rand_test.testid=rand.random_value
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40
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+
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41
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+
```
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