how can i select hours between two times eg(18:00 & 22:00)=4

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Good afternoon
how can i select hours between two times eg(18:00 & 22:00)=4

this code below returns 979848 and i dont understand what this value is
can u please help me

SQL

USE [DUT_Governance_Department]
GO
/****** Object:  StoredProcedure [dbo].[StudentsRespective_Studlog]    Script Date: 10/13/2011 18:41:09 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER Proc [dbo].[StudentsRespective_Studlog]
(@User_names char(8)
 
 )
as
select Passwords ,Students.User_names,F_name,Vote_status,Reg_status,Reg_year ,Regions.Region_name,Function_ID.Function_id,DATEDIFF(MONTH, Reg_year,GETDATE())as Month_Diff,Login_try ,DATEDIFF(hour,Try_time, GETDATE())
from Students,Regions,User_Account,Faculty,Campus,Function_ID   
where  Students.User_names =User_Account .User_names 
AND Faculty.faculty_id =Students.faculty_id
AND Campus.Campus_id=Faculty.Campus_id
AND Regions.Region_id=Campus.Region_id
AND Function_ID .Function_id =User_Account.Function_id 
AND Students.Vote_status in('N','Y')
AND Function_ID.Function_id =4
AND Students.User_names =@User_names

Posted 13-Oct-11 7:03am

sparbery

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DaveAuld · Answer 1 · 2011-10-13T07:22:00

Solution 1

You can use a couple of methods;
Select fields from table where datefield between 'date/time1' and 'datetime2'
e.g.
Select * from Logins where LoginDate between '01-jan-2011 18:00:00' and '01-jan-2011 22:00:00'

OR
Select * from Logins where LoginDate >= '01-jan-2011 18:00:00' and LoginDate <= '01-jan-2011 22:00:00'

Posted 13-Oct-11 7:22am

DaveAuld

Updated 13-Oct-11 7:23am

v3

Comments

sparbery 13-Oct-11 13:31pm

i want to use values coming from the system time and time i inserted

DaveAuld 13-Oct-11 14:08pm

Well just insert those values by calling Now() and modifying using DATEADD(); e.g. DATEADD(NOW(),hh, -4) see the docs here on DateAdd http://msdn.microsoft.com/en-us/library/ms186819.aspx