老是提示select附近有语法错误，我没检查出来，帮我看看吧？谢谢！
string MyInsert = "insert into QQqun1 (QQ) values (select Distinct(QQ) from QQqun2 a where not exists ( select QQ from QQqun1 b where a.QQ=b.QQ) )";
老是提示select附近有语法错误，我没检查出来，帮我看看吧？谢谢！
[解决办法]
insert into QQqun1 (QQ) select qq from
[解决办法]

insert into QQqun1 (QQ) values (select Distinct(QQ) from QQqun2 a where  not  exists ( select QQ from QQqun1 b where a.QQ=b.QQ) )
改为：
insert into QQqun1 (QQ) select Distinct(QQ) from QQqun2 a where  not  exists ( select QQ from QQqun1 b where a.QQ=b.QQ) 

自己看看有什么区别？
[解决办法]

引用:

string MyInsert = "insert into QQqun1 (QQ) values (select Distinct(QQ) from QQqun2 a where not exists ( select QQ from QQqun1 b where a.QQ=b.QQ) )";
老是提示select附近有语法错误，我没检查出来，帮我看看吧？谢谢！

你那样insert语句是一条一条插入的，但是你的values 那个QQ有多条数据，所以不能那样写

 string MyInsert = "insert into QQqun1 (QQ)  select Distinct(QQ) from QQqun2 a where  not  exists ( select QQ from QQqun1 b where a.QQ=b.QQ)"