sql first day month code example

Example 1: sql first day quarter

-- trunc(date, format)						DUAL is for Oracle
SELECT trunc(sysdate, 'Q') FROM DUAL;       -- 1rst quarter day
SELECT trunc(sysdate) FROM DUAL;            -- today 00:00:00
SELECT trunc(sysdate, 'YEAR') FROM DUAL;    -- 1rst year day
SELECT trunc(sysdate, 'MONTH') FROM DUAL;   -- 1rst month day

Example 2: get first monday of month sql

select DATEADD(wk, DATEDIFF(wk,0,
            dateadd(dd,6-datepart(day,getdate()),getdate())
                               ), 0)  
--Change getdate to your variable