字段名：Bran,block,are ,store 四个字段中存在值等于0或者不等于0，两种情况。where中如果用if等条件判断会有16中组合，如果采用where中的条件就避免了这个情况。
declare @a int
declare @b int
declare @c int
declare @d int
set @a=0
set @b=0
set @c=0
set @d=0
select * from ABC_Table
where (b.Bran =@a or @a=0)
and (b.block =@b or @b=0)
and (b.are =@c or @c=0)
and (a.store =@d or @d=0)