如何使用LINQ查询增加小时数? [英] How to add hours to date using LINQ query?

问题描述

我需要获取最近的七个日期，并从数据库中为每个日期添加-4小时

I need to get the last seven dates and add -4 hours to each date from my database

我的SQL查询将是:

select DATEADD(hh, -4, [DateColumn]) 
from mydatabse.dbo.mytable
where DATEDIFF(dd, DATEADD(hh, -4, [DateColumn]), getdate()) between 1 and 7
group by DATEADD(hh, -4, [DateColumn]) 

有人可以帮助我将此SQL查询转换为LINQ吗?

Could anyone help me to convert this SQL query to LINQ ?

推荐答案

我想您正在使用C#?请查看以下是否满足您的需求:

I suppose you're using C#? Please see if the following fits your need:

using System.Data.Entity.SqlServer;

from a in mydatabase.mytable
let d = SqlFunctions.DateAdd("hh", -4, a.DateColumn)
let e = SqlFunctions.DateDiff("dd", d, SqlFunctions.GetDate())
where e >= 1 && e <= 7
group a by d into g
select g.Key;

这篇关于如何使用LINQ查询增加小时数?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！