回答編集履歴
1
SQLの単純化
test
CHANGED
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@@ -31,3 +31,31 @@
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31
31
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)
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32
32
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```
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34
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+
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35
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---
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38
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+
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39
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よく考えたらこれでいけますね
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40
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+
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41
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```SQL
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42
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+
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43
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SELECT *
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FROM table TBL_A
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WHERE EXISTS(
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48
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SELECT 1
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FROM table TBL_B
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WHERE TBL_B.a = TBL_A.a
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HAVING COUNT(*) > 1
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56
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)
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58
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```
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60
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61
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