knrt.net
当前位置:首页 >> linq2sql >>

linq2sql

先为table1表的字段1a创建序列s_1a,然后insert into table1(1a,1b,1c) values(); for v_row in (Select t1.2b,t1.2c from table2 t1,table3 t2 where t1.2a=t2.3a and 3b>10) loop insert into table1(1a,1b,1c) values(s_1a.nextval,v_row.2b,v...

用Contains()方法; 首先获取t2.id这个对象 假如这个id=2 假如表是User var item=from u in ctx.user where u.id=2; 再判断 bool isexists= ctx.user.Contains(item);

网站首页 | 网站地图
All rights reserved Powered by www.knrt.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com