回答編集履歴
1
typesテーブルのidカラムが連番ではない場合の対応方法を記載
answer
CHANGED
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@@ -17,4 +17,29 @@
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SELECT ROW_NUMBER() OVER() AS no, pattern
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FROM Q
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WHERE id = (SELECT MAX(id) FROM Q)
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```
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---
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**2021-08-18 10:11追記**
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typesテーブルのidカラムが連番ではないのであれば、DENSE_RANKを使って連番を生成するやり方があるかと思います。
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```SQL
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WITH RECURSIVE
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P (id, value) AS (
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SELECT DENSE_RANK() OVER(ORDER BY T.id), T.type || ':' || V.value
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FROM types T
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JOIN values V ON T.id = V.type_id
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),
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Q (id, pattern) AS (
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SELECT id, value FROM P WHERE id = 1
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UNION ALL
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SELECT P.id, pattern || ',' || P.value
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FROM P
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JOIN Q ON P.id = Q.id + 1
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)
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SELECT ROW_NUMBER() OVER() AS no, pattern
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FROM Q
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WHERE id = (SELECT MAX(id) FROM Q)
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```
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