作者查詢 / drkkimo
作者 drkkimo 在 PTT [ Database ] 看板的留言(推文), 共14則
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收起看板(549)
2F推:view不錯喔 很實用 但多個table構成的view可能無法作upda11/12 20:28
3F推:te 或insert delete ..11/12 21:32
5F推:view也可以拿來增刪修改 看情形 但考慮況狀較多 所以如果11/13 09:48
6F→:使用時原則上只用來select也可以讓情形較簡化11/13 10:56
2F→:thx u11/11 23:59
2F→:mm... 也是沒錯..07/28 16:27
7F推:字串陣列吧07/29 03:01
1F推:chi-square test?? AHP??07/14 07:24
1F推:放在RAM裡 再定時批次備份到資料庫裡嗎? 但是也有完全用07/09 01:52
1F推:你沒提到join呀 不過join要約十萬多筆資料以上才會變慢07/05 15:33
2F→:所以希望有人能一起來充實條目07/02 23:14
2F推:這本書好像不錯耶06/28 09:15
1F推:資管考到資工所 強喔~06/27 16:25