原文:一個Linq Group By 和Sum的范例

usingSystem usingSystem.Collections.Generic usingSystem.Linq usingSystem.Text usingSystem.IO namespaceConsoleApplication classProgram static voidMain string args varItems newList lt SortItem gt Items ...

2012-09-06 19:16 0 24851 推薦指數:

查看詳情

LinQ Group By

普通    Sql執行時會取全部數據。 into   Sql執行時會取全部數據。   Select     Sql執行的結果為匯總數據。 多列Group   Sql執行 ...

Sun Apr 29 01:05:00 CST 2018 0 13549
SQL sumgroup by HAVING

Aggregate functions (like SUM) often need an added GROUP BY functionality. 集合函數(類似SUM)經常需要用GROUP BY來進行功能性的補充。 GROUP BY... GROUP BY... was added ...

Wed Aug 24 01:11:00 CST 2016 0 13261
linq to entity group by 時間

CreationTime是DateTime類型 group by 年/月/日/小時 group by 年 group by 小時 其他類推 group by 半小時 group by 半小時=group by 30分鍾 group by 半月、半年等等可以類比 參考資料 ...

Wed Oct 30 23:21:00 CST 2019 0 1028
group by 並且 count(1)的linq寫法

SELECT [MobleNo],count(1) FROM [CustMobleNo] group by [MobleNo] GO ===作用等於=== var rst = from c in dataContext.CustMobleNo group c by c.MobleNo ...

Thu Feb 16 23:34:00 CST 2017 0 2879
 
粵ICP備18138465號   © 2018-2025 CODEPRJ.COM