How do you access sysdate and current time in stored procedure SQL server

a.
select * from tablename
where datefield >= cast(convert(varchar(10), dateadd(d, -1, getdate(), 101)  as datetime)
and datefield < cast(convert(varchar(10), getdate(), 101) as datetime)

b.
select * from tablename
where datefield >= cast(convert(varchar(10), dateadd(h, -1, getdate(), 101)  as datetime)

in sql server the date+time (aka now) is available from GETDATE()

select * from Table 
  where dateTime>=dateadd(day, -1, getdate())
    and dateTime<=dateadd(hour,-1, getdate())

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If you happen to be using SQL Server 2008, you can make use of the new Date datatype to accept the dateadd(day, -1, getdate()) value from angelIII's solution for the "yesterday" portion of the problem and then match based upon your dates being between that value and that value + 1.
If you are not on SS2008, you can make use of the fact that the dates are integers and the times are fractions in a double datatype.  (See SQL_1 below)
If you want the process to check for exactly and precisely datetimes during the hour immediately preceding the execution, angelIII's solution is your answer for the second half of the problem.

SQL_1:
 
DECLARE @Yesterday AS DateTime;
DECLARE @ToDay AS INT;
DECLARE @INTTIME AS INT;
DECLARE @LastHour AS Datetime;
DECLARE @ThisHour AS Datetime;
 
 
 
SET @Yesterday = CAST(CAST(GETDATE() AS INT) AS DATETIME);
SET @ToDay = CAST(Cast(GETDATE() AS INT) AS DATETIME
 
SELECT @ThisHour = 
       CAST(CONVERT(VARCHAR(02), JustTime, 108) AS INT)FROM
(SELECT GETDATE() - CAST(INTDATE AS DATETIME) AS JustTime,
        INTDATE
FROM
(SELECT CAST(GetDate() AS INT) AS INTDATE
) X
) Y;
 
SET @LastHour = @ThisHour - 1;
 
 
SELECT * 
FROM Table 
WHERE CAST(DateTimeColmun as INT) BETWEEN @YESTERDAY AND (@YESTERDAY + 1);
 
SELECT *
FROM Table
WHERE DateTimeColmun >= (@Today + @LastHour) 
  AND DateTimeColumn <  (@Today + @ThisHour)
 

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k, thanks guys, I am checking into the solution and will award points in next couple of days.

angellll
select * from Table
  where dateTime>=dateadd(day, -1, getdate())
    and dateTime<=dateadd(hour,-1, getdate())

does not giove me all records from last one day ie
I need records from
select * from Table
and dateTime > '04/12/09 00:00'
and dateTime < '04/13/09 09:00' (assuming 09:00 is the current time)

How can I add the 00:00 to the above query

chap, that did not work. It gave me following error:
Server: Msg 174, Level 15, State 1, Line 21
The dateadd function requires 3 arguments.

there is some () misplaced..

select * from tablename
where datefield >= convert(datetime, convert(varchar(10), dateadd(d, -1, getdate()), 120), 120)
and datefield < getdate() 

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WHOOPS:

select * from tablename
where datefield >= cast(convert(varchar(10), dateadd(d, -1, getdate()), 101)  as datetime)
and datefield < cast(convert(varchar(10), getdate(), 101) as datetime)

amgelll your qyery seems to be working ok, how can modify this for just looking back for past one hour.

Chap, your query is returning only rows for past one day, not for today

>>Chap, your query is returning only rows for past one day, not for today
Sorry, i  thought that is what you wanted.