moe57
asked on
how to convert nvarchar to time in sql server
I have column called Shift_End in my table but the data type is nvarchar. All the values for this column are military format but nvarchar. For example like this:
Shift_End
1500
1600
1730
1800
1830
So i want to pull all records where Shift_End > current datetime. If shift_end is 1600, then i want to see all records after 1600.
Shift_End
1500
1600
1730
1800
1830
So i want to pull all records where Shift_End > current datetime. If shift_end is 1600, then i want to see all records after 1600.
You could easily convert your nvarchar to int and and compare to the current time by turning that into an int
DECLARE @V nvarchar(50)
SET @V = '1600'
SELECT CAST(@V AS int)
SELECT DATEPART(HOUR,GETDATE()) * 100 + DATEPART(MINUTE, GETDATE())
DECLARE @V nvarchar(50)
SET @V = '1600'
SELECT CAST(@V AS int)
SELECT DATEPART(HOUR,GETDATE()) * 100 + DATEPART(MINUTE, GETDATE())
I think the shift_end is part of a work schedule, not the time from a punch clock, correct?
ASKER
yes that is part of the work schedule
>where Shift_End > current datetime.
<correction> Didn't catch that part, try this...
<correction> Didn't catch that part, try this...
CREATE TABLE #time (Shift_End nvarchar(10))
INSERT INTO #time (Shift_End)
VALUES ('1500'), ('1600'), ('1730'), ('1800'), ('1830')
Declare @current_hhmm int
SET @current_hhmm = (DATEPART(hh, getdate()) * 100) + DATEPART(mm, getdate())
SELECT Shift_End
FROM #time
WHERE CAST(SHift_End as int) > @current_hhmm AND TRY_CAST(Shift_End as int) IS NOT NULL
ASKER
just to clarify, i have a date column in the table and the data type for that column datetime but the time is separete and nvarchar
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i want to pull all records where Shift_End > current datetime. If shift_end is 1600, then i want to see all records after 1600.
Those contradict each other. Do you want shift end > current datetime, or current datetime > shift end?
ASKER
thanks
Two design mistakes on somebody's part: Storing time data as an nvarchar, and storing time data separate from the date. If this is to keep track of shifts, you'll need the date and time together to track hours where the shift crosses over midnight.
Either way, try this..
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