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declare @time datetime<br />
<br />
select @time=dateadd(dd,-2,getdat<wbr />e())<br />
<br />

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declare @time datetime

select @time=dateadd(dd,-2,getdate())



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Declare @time datetime<br />
set @time = DATEADD(hour, -4, getdate ())
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Declare @time datetime
set @time = DATEADD(hour, -4, getdate ())

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Sorry, misread the question :)
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with the help of DateAdd function, you can add/subtract hour, minutes, days, months etc. for more details about DateAdd function. <br />
<br />
<a href="http://msdn.microsoft.com/en-us/library/ms186819.aspx" rel="ugc">http://msdn.microsoft.com/en-us/library/ms186819.aspx</a><br />

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with the help of DateAdd function, you can add/subtract hour, minutes, days, months etc. for more details about DateAdd function.

http://msdn.microsoft.com/en-us/library/ms186819.aspx [http://msdn.microsoft.com/en-us/library/ms186819.aspx]


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If you are trying to set the date back 7 days AND 4 hours, you can nest the dateadd function. &nbsp;<br />
<br />
declare @time datetime<br />
select @time=dateadd(dd,-7,(datea<wbr />dd(hh,-4,g<wbr />etdate()))<wbr />)<br />
select @time
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If you are trying to set the date back 7 days AND 4 hours, you can nest the dateadd function.  

declare @time datetime
select @time=dateadd(dd,-7,(dateadd(hh,-4,getdate())))
select @time

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<div class="content wysiwyg-content">
I know how to declare and set a variable to get the current time minus a specified number of hours as shown below:<br />
<br />
Declare @time datetime<br />
set @time = (select getdate ())- '04:00:00'<br />
<br />
<br />
but I cannot figure out how to do the same but with days instead of just hours. <br />
<br />

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I know how to declare and set a variable to get the current time minus a specified number of hours as shown below:

Declare @time datetime
set @time = (select getdate ())- '04:00:00'


but I cannot figure out how to do the same but with days instead of just hours. 



Setting a datetime variable to current date - 7 days

Microsoft SQL Server 2005 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. It includes support for managing XML data and allows a database server to be exposed over web services using Tabular Data Stream (TDS) packets encapsulated within SOAP (protocol) requests.

Microsoft SQL Server 2005

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data. SQL consists of data definition, data manipulation, and procedural elements. Its scope includes data insert, query, update and delete, schema creation and modification, and data access control.