SQL Server - Round TIME values to the next minute
Solution 1
SELECT DATEADD(MINUTE, CEILING(DATEDIFF(SECOND, 0, CAST(CAST(PA.ORA_INIZIO AS DATETIME) AS TIME)) / 60.0), DATEDIFF(DAY, 0, PA.ORA_INIZIO)) AS BEGIN_TIME_ROUNDED
EDIT
As pointed out in a comment this fails for times between 0 and 1 second. This can be combatted by simply changing the precision in the ceiling from seconds to milliseconds:
SELECT PA.ORA_INIZIO,
DATEADD(MINUTE,
CEILING(DATEDIFF(MILLISECOND, 0, CAST(PA.ORA_INIZIO AS TIME)) / 60000.0),
DATEDIFF(DAY, 0, PA.ORA_INIZIO)) AS BEGIN_TIME_ROUNDED
FROM (VALUES
(CONVERT(DATETIME, '20211126 15:59:00.997')),
(CONVERT(DATETIME, '20211126 15:59:00.004'))
) AS PA (ORA_INIZIO);
Which gives:
ORA_INIZIO | BEGIN_TIME_ROUNDED |
---|---|
2021-11-26 15:59:59.997 | 2021-11-26 16:00:00.000 |
2021-11-26 15:59:00.003 | 2021-11-26 16:00:00.000 |
Solution 2
Just CAST to smalldatetime for rounding to nearest minute
SELECT
CAST(CAST('15:59:59.9970000' AS time) AS smalldatetime),
CAST(CAST('15:59:30.0030000' AS time) AS smalldatetime),
CAST(CAST('15:59:30.0000000' AS time) AS smalldatetime),
CAST(CAST('15:59:29.9970000' AS time) AS smalldatetime),
CAST(CAST('15:59:00.0030000' AS time) AS smalldatetime)
The DATEADD/DATEDIFF is for truncating some time unit
Edit, misread questions
Just modify your current CAST
CAST(
DATEADD(minute,
DATEDIFF(minute,
0,
CAST(PA.ORA_INIZIO AS DATETIME)
) + 1,
0
)
AS TIME)
Solution 3
Don't know SQL Server well enough to answer off hand, but if no one comes by with a more more de facto way of doing this, then you could just add 1 minute to the value before rounding it down. Or add 0.999 minutes if you need to handle integer input values correctly as well.
ienax_ridens
Updated on June 04, 2022Comments
-
ienax_ridens about 2 years
I've found many posts about rounding "down" time values (e.g. https://stackoverflow.com/a/6667041/468823), but I have another problem: I wanna round to the higher minute and not to the lower, how can I do?
My code:
SELECT PA.ORE AS TOT_HOURS, CAST(CAST(PA.ORA_INIZIO AS DATETIME) AS TIME) AS BEGIN_TIME, CAST(dateadd(minute, datediff(minute, 0, (CAST(PA.ORA_INIZIO AS DATETIME))), 0) AS TIME) AS BEGIN_TIME_ROUNDED FROM PRG_ATTIVITA PA INNER JOIN PRG_TIPI_ATTIVITA PTA ON PA.ID_TIPO_ATTIVITA = PTA.ID_TIPO_ATTIVITA INNER JOIN PER_ANAGRAFICA PAN ON PA.ID_DIPENDENTE = PAN.ID_DIPENDENTE WHERE PA.ID_PROGETTO = 1431 and pta.DESCR_TIPO_ATTIVITA like 'F-%remoto%' and ID_ATTIVITA = 41772 ORDER BY PA.DATA_ATTIVITA
My result is the following:
TOT_HOURS BEGIN_TIME BEGIN_TIME_ROUNDED 1.50 15:59:59.9970000 15:59:00.0000000
I want BEGIN_TIME_ROUNDED = 16:00:00.0000000
NOTES: 1. I must convert my data { CAST(PA.ORA_INIZIO AS DATETIME) } because in the database I have time data as float values 2. BEGIN_TIME is the real value of my time value after conversion