摘要: using (Test db = new Test()) { List<table3> list = (from a in db.table1 join b in db.table2 on a.Pid equals b.Pid into c from d in c.DefaultIfEmpty()/ 阅读全文
posted @ 2021-07-29 10:23 奇迹之耀 阅读(211) 评论(0) 推荐(0) 编辑