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In the Sqlserver database, the DATEADD () function adds or subtracts the specified time interval from the date. For example, you can use the DateAdd () function to calculate the time of the current time to the next day and the time of the previous day. The format of the DateAdd () function is: DATEADD (datepart,number,date), where the datepart parameter is a legal date expression. Number is the number of intervals you want to add; for future times, it is positive, and for past times, it is negative.

Taking the current time of 23:57:30 on March 22nd, 2019 as an example, the following examples help to understand:

(1) add 1 day to the current time: Select dateadd (DD,1,GETDATE ())

(2) add 1 week to the current time: Select dateadd (WK,1,GETDATE ())

(3) add one month to the current time: Select dateadd (MMagne 1 ~ GETDATE ())

(4) add one quarter to the current time: Select dateadd (QJI GETDATE ())

(5) add one year to the current time: Select dateadd (YY,1,GETDATE ())

Note: this article was first published in the blog's personal blog IT technology fun room, the original Sqlserver DateAdd () function _ IT technology fun room, reproduced please indicate the source.

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