回答編集履歴
1
条件もれ修正
test
CHANGED
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@@ -6,7 +6,7 @@
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6
6
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7
7
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id, 親id, 階層
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8
8
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9
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-
, exists(SELEC 1 from myTable where 親ID=t1.ID) as 子あり
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9
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+
, exists(SELEC 1 from myTable where 親ID=t1.ID and 階層=t1.階層+1) as 子あり
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10
10
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11
11
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FROM
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12
12
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