1
我有SQL表基於另一個行值顯示金額的總和
id_details
year-month
type (only have 2 values , income and outcome)
amount
和表有一行這樣
(year-month) (type) (amount)
November-2012 income 50000
November-2012 income 30000
December-2012 income 20000
November-2012 outcome 10000
December-2012 outcome 50000
December-2012 income 10000
我要的是,呈現出這樣
結果查詢(year-month) (sum income) (sum-outcome) (sub-total balance)
November-2012 80000 10000 70000
December-2012 30000 50000 -20000
終於
total-balance = 50000
我該怎麼做? 或者你可以給我推薦更好的表設計
作品般的魅力,謝謝你救了我的命 – user1843843
沒問題。該SUM/CASE組合可能非常有用。 – Tom