E:\Chp3\UnicodeTest\UnicodeTestView.cpp(202) : error C2065: 'Lrs' : undeclared identifier
E:\Chp3\UnicodeTest\UnicodeTestView.cpp(202) : error C2227: left of '->m_column3' must point to class/struct/union
select Name as nvarchar(50) from Book where Bianhao=1006
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sql语句能这么写吗,as后面是什么,是别名啊,你写的是什么,是定义Name为nvarchar类型,长度为50