public Task <AppUserView> QuerySingleViewByAsync(string userName)
{
var q = AppUserView.Query().ToInnerQuery("t").Sql(" where t.user_name=:0", userName);
return(this.Cmd.QuerySingleAsync <AppUserView>(q));
}
public Task <IList <AppUserView> > QueryViewAsync() => this.Cmd.QueryAsync <AppUserView>(AppUserView.Query());