![]() + CASE WHEN DATEPART(SECOND, a.EndDate - a.StartDate) > 0 THEN CAST( DATEPART(SECOND, a.EndDate - a. + CASE WHEN DATEPART(MINUTE, a.EndDate - a.StartDate) > 0 THEN CAST( DATEPART(MINUTE, a.EndDate - a.StartDate) AS nvarchar( 100)) + ' Minutes ' ELSE ' ' END + CASE WHEN DATEPART(HOUR, a.EndDate - a.StartDate) > 0 THEN CAST( DATEPART(HOUR, a.EndDate - a.StartDate) AS nvarchar( 100)) + ' Hours ' ELSE ' ' END + CASE WHEN DATEPART(DAY, a.EndDate - a.StartDate) > 1 THEN CAST( DATEPART(DAY, a.EndDate - a.StartDate) - 1 AS nvarchar( 100)) + ' Days ' ELSE ' ' END + CASE WHEN DATEPART(MONTH, a.EndDate - a.StartDate) > 1 THEN CAST( DATEPART(MONTH, a.EndDate - a.StartDate) - 1 AS nvarchar( 100)) + ' Months ' ELSE ' ' END I want to subtract 'X' days and 'X' minutes from sysdate, where the days and minutes are an integer as input parameter. The syntax of this function is: DATEADD (datepart, number, date) datepart is a portion of the date to which a specified numeric value will be added. We can add or subtract a numeric value to a specified date-time to get future or past timelines. Remove 0 elements from the output SELECT CASE WHEN DATEPART(YEAR, a.EndDate - a.StartDate) > 1900 THEN CAST( DATEPART(YEAR, a.EndDate - a.StartDate) - 1900 AS nvarchar( 100)) + ' Year ' ELSE ' ' END We can specify intervals when performing arithmetic against dates and times. The DATEADD function is used to manipulate SQL date and time values based on some specified parameters. Let's have a look at this using an example: This introduces complexity in the calculation since in each date part, the previous date part value needs to be taken into account. In other words, if you choose the interval to be minutes a difference is expressed in minutes even if the difference is greater than a single hour. The default precision is 3, meaning a milliseconds precision current time will be returned. As a function, CURRENTTIME () accepts precision as an optional parameter for rounding the second fractional digits (nanoseconds). DATEDIFF calculates the whole difference between two dates. Description: Returns the time when the current query reached the server. There are a ton of examples how to calculate the difference for two datetime values using DATEDIFF function. ![]() ![]() INSERT INTO #TextualDateDiffTest (StartDate, EndDate) Insert test data INSERT INTO #TextualDateDiffTest (StartDate, EndDate)
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