SQL Server Dates

Today
SELECT GETDATE() ‘Today’
Yesterday
SELECT DATEADD(d,-1,GETDATE()) ‘Yesterday’
First Day of Current Week
SELECT DATEADD(wk,DATEDIFF(wk,0,GETDATE()),0)’First Day of Current Week’
Last Day of Current Week
SELECT DATEADD(wk,DATEDIFF(wk,0,GETDATE()),6) ‘Last Day of Current Week’
First Day of Last Week
SELECT DATEADD(wk,DATEDIFF(wk,7,GETDATE()),0) ‘First Day of Last Week’
Last Day of Last Week
SELECT DATEADD(wk,DATEDIFF(wk,7,GETDATE()),6) ‘Last Day of Last Week’
First Day of Current Month
SELECT DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0)’First Day of Current Month’
Last Day of Current Month
SELECT DATEADD(ms,-3,DATEADD(mm,0,DATEADD(mm,DATEDIFF(mm,0,GETDATE())+1,0)))’Last Day of Current Month’
First Day of Last Month
SELECT DATEADD(mm,-1,DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0))’First Day of Last Month’
Last Day of Last Month
SELECT DATEADD(ms,-3,DATEADD(mm,0,DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0)))’Last Day of Last Month’
First Day of Current Year
SELECT DATEADD(yy,DATEDIFF(yy,0,GETDATE()),0)’First Day of Current Year’
Last Day of Current Year
SELECT DATEADD(ms,-3,DATEADD(yy,0,DATEADD(yy,DATEDIFF(yy,0,GETDATE())+1,0)))’Last Day of Current Year’
First Day of Last Year
SELECT DATEADD(yy,-1,DATEADD(yy,DATEDIFF(yy,0,GETDATE()),0))’First Day of Last Year’
Last Day of Last Year
SELECT DATEADD(ms,-3,DATEADD(yy,0,DATEADD(yy,DATEDIFF(yy,0,GETDATE()),0)))’Last Day of Last Year’
Ref:https://community.dynamics.com/crm/b/marcellotonarelli/archive/2014/03/04/microsoft-sql-server-date-function.aspx