SQL Server中的SQL 语句汇总

一、简单实用union的话，顺序是不肯定的，使用下面的方法能够进行排序

select num from (
select COUNT(1) num,1 flag  from AT_SGMW_Interface_CertInfo_V5
where checkTime_S>convert(varchar(10),GETDATE(),120)+' 00:00:00'
and checkFlag_S='1'
union all
select COUNT(1) num,2 flag from AT_SGMW_Interface_CertInfo_V5
where checkTime_S>convert(varchar(10),GETDATE(),120)+' 00:00:00'
and checkFlag_S!='1') temp order by flag