sql sugar

事务

using (var db = new SqlSugarClient(new ConnectionConfig()
      {
         ConnectionString = Config.xxx,
         DbType = SqlSugar.DbType.MySql
     }))
{
                try
                {
                    db.Ado.BeginTran();
                    var count = db.Updateable(flow).ExecuteCommand();
                    if (count != )
                        throw new Exception();
                    db.Ado.CommitTran();
                    return ;
                }
                catch (Exception)
                {
                    db.Ado.RollbackTran();
                    return ;
                }
}

判断字段不为空且值==1

query = query.Where(a => SqlFunc.HasValue(a.visible) && a.visible.Value ==1);

query = query.Where(a => a.visible !=null && a.visible.Value ==1);

order by ,  page

var result = query
   .OrderBy(a=>a.ModifyTime,OrderByType.Desc)
   .ToPageList(pageIndex, pageSize, ref count);