---#datepart hafta , kun , oydagi nechanchiligini chiqaradi yana vaziyatga qarab boshqa xususiyati ham bo'lishi mumkin
select datepart (day ,getdate())
select datepart (weekday ,getdate())--- nechanchi hafta ekanligi
---#dateadd -- kun ,oy,..... qo'shish yoki ayirish
select datename (day ,getdate())
---#datediff 2 vaqt orasidagi farqni hisoblash
select datepart (day ,getdate())
select datepart (weekday ,getdate())--- nechanchi hafta ekanligi
---#dateadd -- kun ,oy,..... qo'shish yoki ayirish
select datename (day ,getdate())
---#datediff 2 vaqt orasidagi farqni hisoblash