回答編集履歴
2
抜けがあったので修正
test
CHANGED
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@@ -4,7 +4,7 @@
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4
4
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5
5
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`WHERE`で`status`が3のレコードで絞って
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6
6
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7
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-
`GROUP BY`で`item_code`をキーに`order_count`を合計して
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7
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+
`GROUP BY`で`item_code`と`item_name`をキーに`order_count`を合計して
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8
8
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9
9
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`ORDER BY`で`order_count`で並び替えをしてあげればよさそうですかね。
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10
10
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@@ -12,6 +12,6 @@
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12
12
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13
13
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```SQL
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14
14
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15
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-
SELECT item_code,item_name,sum(order_count) AS order_count FROM order_history WHERE status=3 GROUP BY item_code ORDER BY order_count desc;
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15
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+
SELECT item_code,item_name,sum(order_count) AS order_count FROM order_history WHERE status=3 GROUP BY item_code,item_name ORDER BY order_count desc;
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16
16
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17
17
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```
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1
誤認識
test
CHANGED
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@@ -1,7 +1,17 @@
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1
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+
質問文ちゃんと読めてませんでした…。
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2
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+
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3
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+
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4
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+
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5
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+
`WHERE`で`status`が3のレコードで絞って
|
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6
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+
|
|
7
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+
`GROUP BY`で`item_code`をキーに`order_count`を合計して
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8
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+
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1
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-
`
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9
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+
`ORDER BY`で`order_count`で並び替えをしてあげればよさそうですかね。
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10
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+
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11
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+
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2
12
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3
13
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```SQL
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4
14
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5
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-
SELECT item_code,item_name,order_count FROM order_history WHERE status=3 ORDER BY order_count desc;
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15
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+
SELECT item_code,item_name,sum(order_count) AS order_count FROM order_history WHERE status=3 GROUP BY item_code ORDER BY order_count desc;
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6
16
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7
17
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```
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