我寫的SQL Server查詢:select查詢,比較空記錄
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]+'%'
的問題是場「SN2」是空的幾個記錄。那我該如何比較呢?
當前編寫的代碼是否會排除SN2爲空的所有行? – 2012-01-10 15:09:53
我可能是錯的,但是這不會阻止使用包含SN2的索引嗎? – cadrell0 2012-01-10 15:12:40
@PhilipKelley:的確如此。 – 2012-01-10 15:14:20