The SQL datepart function uses

Source: Internet
Author: User

DATEPART

Returns an integer representing the specified date portion of the specified date.

Grammar

DATEPART datepart ,date )

Parameters

DatePart

is a parameter that specifies the date part that should be returned. The following table lists the date parts and abbreviations identified by Microsoft®sql Server™.

Date Part Abbreviations
Year YY, yyyy
Quarter QQ, Q
Month MM, M
DayOfYear Dy, y
Day DD, D
Week WK, WW
Weekday Dw
Hour hh
Minute MI, n
Second SS, S
Millisecond Ms
Additionally: When GROUP by DATEPART (yyyy,date), DATEPART (mm,date), DATEPART (dd,date) are grouped by date, the same method can be used instead of convert (varchar), date , 120) The effect of the two is the same, if you use the week as a group datepart (dw,date) DatePart return week is the number type of Use Datename (dw,date) can return Chinese characters form the week

The SQL datepart function uses

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