sql中的非空判断语句
求个sql判断非空的语句;
类似select     Group_ID,Group_Name   from   T_CD_Group     where   Group_ID   isnot   null
但不是isnot   .具体忘了   .

------解决方案--------------------
select Group_ID,Group_Name from T_CD_Group where Group_ID is not null
------解决方案--------------------
判断：
is not null
is null

赋值：
=null
------解决方案--------------------
select Group_ID,Group_Name from T_CD_Group where Group_ID is not null