回答編集履歴
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修正
answer
CHANGED
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@@ -1,14 +1,14 @@
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動作確認してませんが、こんな感じでしょうか？
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```SQL
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3
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-
SELECT group
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3
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+
SELECT t.group
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-
, path AS root_path
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, t.path AS root_path
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, size AS root_size
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, t.size AS root_size
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-
, allSize - size AS size_sum
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, s.allSize - t.size AS size_sum
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FROM table t
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LEFT JOIN (
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SELECT group, sum(size) as allSize
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FROM table
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GROUP BY group
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) s ON t.group = s.group
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WHERE path_hierarchy = 0
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+
WHERE t.path_hierarchy = 0
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```
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