我写的SQL Server查询:select查询,比较空记录
select * from vwApplicationList
where status='Unassigned' AND
BBL like '%' + @BBL + '%' AND
UnitOrAppartmentNumber like '%'[email protected]+'%' AND
ResidenceTypeDescription like '%'[email protected]+'%' AND
SN1 like '%'[email protected]+'%' AND
SN2 like '%'[email protected]+'%'
的问题是场“SN2”是空的几个记录。那我该如何比较呢?
当前编写的代码是否会排除SN2为空的所有行? – 2012-01-10 15:09:53
我可能是错的,但是这不会阻止使用包含SN2的索引吗? – cadrell0 2012-01-10 15:12:40
@PhilipKelley:的确如此。 – 2012-01-10 15:14:20