sqlserver date arithmetic problem - sql

Question

I have a records of events with starttime and endtime for a calendar control.
I want to get the events done on a particular date say 2/28/2009
But the db table has date data in form 2/28/2009 10:00:00, 2/28/2009 12:00:00.
I tried this query in a sproc created in VS 2005 IDE but it didn't work
ALTER PROCEDURE dbo.spSelectBenchEvent
(
#EVENT_DATE DATE // BTW, THIS RETURNS ERROR :CANNOT FIND DATE DATATYPE.
//#EVENT_DATE HAS INVALID DATATYPE
)
AS
BEGIN TRAN
SET NOCOUNT ON;
SELECT ID, EID, BENCHID, PACCODE, START_TIME, END_TIME
FROM tbl_benchbook
WHERE START_TIME=EVENT_DATE
ORDER BY START_TIME
Thanks in advance.

Answer 1

There were many questions related to this one, check out:
Floor a date in SQL server
and for best performance-wise solution check: MS SQL Date Only Without Time
Basically your code could look like:
select
id, eid, benchid, paccode, start_time, end_time
from
tbl_benchbook
where start_time >= dateadd(dd, datediff(dd, 0, #event_date), 0)
and start_time < dateadd(dd, datediff(dd, 0, #event_date)+1, 0)

Answer 2

Based on your updated ques , this should work :
SELECT ID, EID, BENCHID, PACCODE, START_TIME, END_TIME
FROM tbl_benchbook
WHERE START_TIME >= #EVENT_DATE
AND START_TIME < DATEADD(day,1,#EVENT_DATE)
ORDER BY START_TIME

Answer 3

If you wish to evaluate all events on the date 3/29/2009 use the following where cluase.
SELECT *
FROM tableName
WHERE Date >= '2009/03/29' AND Date < '2009/03/30'
The key point to take away here is that in order to capture all records that occured on a given date you need to define a date range that includes all time values for that day.
Make sense?
Cheers, John

Answer 4

--1. you need to make sure there is no time on the parameter
--2. you can just use "+1" on the datetime, to get the next day
enter ALTER PROCEDURE dbo.spSelectBenchEvent
(
#EVENT_DATE DATETIME
)
AS
BEGIN TRAN
SET NOCOUNT ON;
--remove any time from given date
SET #EVENT_DATE=CONVERT(char(10),#EVENT_DATE,111)
SELECT ID, EID, BENCHID, PACCODE, START_TIME, END_TIME
FROM tbl_benchbook
WHERE START_TIME>=#EVENT_DATE AND START_TIME<#EVENT_DATE+1
ORDER BY START_TIME
code here