Question

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

Asked by: rheasam

I have stored procedure which runs wvery hour. However every hour I need to dynam,ixally change date/time,. I need two cases
a. Run query for previous day to concompass the whole day
select * from Table where dateTime>=(sysdate-1):0000 and dateTime=(sysdate-1):2359

b. I need a query which looks for anything for the past one hour for today

select * from Table where dateTime>=sysdate-1:currentime and dateTime<=sysdate:currentime -1  (past one hour)




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Asked On
2009-04-10 at 13:48:22ID24313530
Topics

Databases Miscellaneous

,

SQL Server 2005

,

SQL Query Syntax

Participating Experts
3
Points
500
Comments
12

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Answers

 

by: chapmandewPosted on 2009-04-10 at 13:51:41ID: 24119077

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)

 

by: angelIIIPosted on 2009-04-10 at 13:52:34ID: 24119083

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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by: 8080_DiverPosted on 2009-04-10 at 15:07:21ID: 24119740

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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by: rheasamPosted on 2009-04-12 at 18:00:33ID: 24127529

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

 

by: rheasamPosted on 2009-04-13 at 07:17:52ID: 24129958

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

 

by: chapmandewPosted on 2009-04-13 at 07:26:07ID: 24130018

did you try my first post?

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)

 

by: rheasamPosted on 2009-04-13 at 09:57:05ID: 24131106

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.

 

by: angelIIIPosted on 2009-04-13 at 10:09:25ID: 24131183

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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by: chapmandewPosted on 2009-04-13 at 10:11:32ID: 24131197

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)

 

by: rheasamPosted on 2009-04-13 at 12:07:40ID: 24132024

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

 

by: chapmandewPosted on 2009-04-13 at 12:25:19ID: 24132146

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

 

by: angelIIIPosted on 2009-04-13 at 15:03:01ID: 24133284

back 1 hour:

select * from tablename
where datefield >= dateadd(hour, -1, getdate()) 
and datefield < getdate() 

                                              
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Select allOpen in new window

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