作者查詢 / kofi0916
作者 kofi0916 在 PTT [ Database ] 看板的留言(推文), 共11則
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5F→:select t.range as [score range], count(*) as [number04/03 15:47
6F→:of occurences]04/03 15:48
7F→:from (04/03 15:48
8F→:select case04/03 15:49
9F→:when score between 0 and 9 then ' 0- 9'04/03 15:49
10F→:when score between 10 and 19 then '10-19'04/03 15:50
11F→:else '20-99' end as range04/03 15:50
12F→:from scores) t04/03 15:51
13F→:group by t.range04/03 15:51
1F→:我比較喜歡在book及computer中增加一個photo ID的欄位04/03 10:43
2F→:而不是在photo_table中處理type及sub_id04/03 10:45
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