MSSQL 常用自定义函数

/*

得到时间

*/

CREATE FUNCTION f_GetTime (@value datetime )
RETURNS datetime AS
BEGIN
return CONVERT(varchar(100), @value, 24)
END

/*

得到日期

*/

CREATE FUNCTION f_GetDate (@value datetime )
RETURNS datetime AS
BEGIN
return CONVERT(varchar(100), @value, 23)
END

/*

得到星期几

*/

CREATE FUNCTION f_GetWeek (@value datetime )
RETURNS int AS
BEGIN
return Datepart(weekday, @value + @@DateFirst - 1)
END