回答編集履歴
1
修正後の要件を満たすSQLを追記
test
CHANGED
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@@ -7,3 +7,16 @@
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7
7
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ON table1.id = table2.id
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8
8
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GROUP BY table1.id
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9
9
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```
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10
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+
---
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11
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**2023-06-13 10:41 追記**
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12
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+
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13
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修正後の要件を満たすSQLは以下のようなものになるかと思います。
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14
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+
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15
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```SQL
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16
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SELECT table1.id, SUM(table2.pcs), MAX(table3.value)
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17
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FROM table1
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18
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LEFT JOIN table2 ON table1.id = table2.id
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19
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LEFT JOIN table3 ON table1.id = table3.id
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20
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WHERE table2.category = 1
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21
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GROUP BY table1.id
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22
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```
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