--sql server 中 bit 字段的 查询方法
select * from dbo.PCS_RequestBuyBills
where DelFlag=1
select * from dbo.PCS_RequestBuyBills
where DelFlag=0
select * from dbo.PCS_RequestBuyBills
where DelFlag='true'
select * from dbo.PCS_RequestBuyBills
where DelFlag='false'