Question

Using SQL Server 2000

I want to round off the time like 01:00:00 or 01:30:00 or 02:00:00 or 02:30:00 or 03:00:00

TABLE1

ID TIME

001 02:15:00 'Format (HH:mm:ss)
002 02:17:00
003 02:47:00
004 03:00:00
005 02:00:00
....

Time column’s datatype is nvarchar

Condition

02:00:00 to 02:15:00 - I want to show 02:00:00 only
02:16:00 to 02:44:00 - I want to show 02:30:00 only
02:45:00 to 03:00:00 - I want to show 03:00:00 only
...

Expected output for table1

ID TIME

001 02:00:00 'Less than or equal to 2.15 mins so it should change to 02 hrs
002 02:30:00 'Less than 2.44 mins so it should change to 2.30 mins
003 03:00:00 'Greather than 2.45 mins so it should change to 03 hrs
004 03:00:00 'Same
005 02:00:00 'Same
....

How to make a query for this condition

Need query help

Answer 1

Try This:

CREATE TABLE #time(ID int, TIME nvarchar(25))

INSERT INTO #time
VALUES(001,'02:15:00'),
(002,'02:17:00'),
(003,'02:47:00'),
(004,'03:00:00'),
(005,'02:00:00')

SELECT time,CASE  
             WHEN CAST(SUBSTRING(time,CHARINDEX(':',time,1)+1,2) as int) <= 15 then LEFT(time,2)+':00:00'
             WHEN CAST(SUBSTRING(time,CHARINDEX(':',time,1)+1,2) as int) >15 and CAST(SUBSTRING(time,CHARINDEX(':',time,1)+1,2) as int) <=45 then LEFT(time,2)+':30:00' 
             WHEN CAST(SUBSTRING(time,CHARINDEX(':',time,1)+1,2) as int) >45 and CAST(SUBSTRING(time,CHARINDEX(':',time,1)+1,2) as int) <=59 then '0'+cast((cast(LEFT(time,2) as int)+1) as varchar(3))+':00:00' 
             END
FROM #time