如何用sql语句实现下列功能?
select   *   from   a   where   rq> =当前月初日            and   rq <=   当前日
------解决方案--------------------select * from a where rq> =Convert(Varchar(8), GetDate(),120) +  '01 '    and rq <= GetDate() 
------解决方案--------------------select * from a where rq between cast(rtrim(year(rq))+ '- '+rtrim(month(rq))+ '-01 ' as datetime) and getdate()