作者查詢 / fantasyj
作者 fantasyj 在 PTT [ Database ] 看板的留言(推文), 共113則
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1F推: select distinct accno, ym||d date from bill;12/15 14:30
1F推: pl/sql developer 的command windows 輸入指令07/29 14:28
2F→: edit procedure_name 或是 view procedure_name07/29 14:29
2F→:先理解一下SQL的基礎...10/15 19:48
1F→:like '%1__'09/25 20:10
10F→:先了解一下sql的基本語法?09/23 22:46
1F→:select sum(amount) as a, avg(amount) as b from table09/15 08:54
4F→:select a.customer, a.amount, a.amount / b.toal_amt09/15 18:33
5F→: from table as a,09/15 18:34
6F→: (select sum(b.amount) as total_amt09/15 18:34
7F→: from table as b) as b09/15 18:34
8F推:select a.customer, a.amt, a.amt/b.total_amt09/17 14:30
9F推:from (select a.customer,sum(a.amount) as amt from tab09/17 14:32
10F→:le as a group by a.customer) as a,09/17 14:33
11F→:(select sum(b.amount) as total_amt from table as b)09/17 14:34
12F→:上面的拼起來執行看看(用手機不太好回文)09/17 14:35
1F→:select sum(amount) as a, avg(amount) as b from table09/15 08:54
4F→:select a.customer, a.amount, a.amount / b.toal_amt09/15 18:33
5F→: from table as a,09/15 18:34
6F→: (select sum(b.amount) as total_amt09/15 18:34
7F→: from table as b) as b09/15 18:34
3F→:oracel d2k?07/13 18:38
1F→:table先distinct後再left join..06/30 15:32
1F→:t-sql和pl/sql差很多..06/16 11:02
3F→:跨db查詢要看資料量,但直接藉link查詢效能不見得比較好.06/16 16:58
11F→:用sql server連oracle就便宜很多,只是就先前說過了..06/17 20:59