本来先打算上个图来说明一下这条线的,可是我的画图工具还没有安装好,我先把跟TestClient.java相关的几个文件代码贴上来,但是由于代码行数还是不少的,所以请大家阅读文章的时候先不要展开代码,等读到有关代码解释的时候再返回去查看.代码源自FastDFS老大鱼大大的. TestClient.java: /** * Copyright (C) 2008 Happy Fish / YuQing * * FastDFS Java Client may be copied only under th
表中有这样的记录,简单的主子表,现要想通过left join 语句把两表关联起来 select * from tbl_diary_reback a left join tbl_diary_reback_files s on a.id =s.diaryrebackid where diaryid = '-7e0f6876:1400eb06d1f:-7fed' and diaryrebackid = '1a75114e:140136e5d5f:-7ff3' 由于子表是两条不同数据,会出现两条记录.如
-- 演示将多条记录数据组合成一条sql插入语句(for mysql) function getTpl0(tname) -- 获取表各个字段 local t = { tpl_pack = {"packId","itemId","`group`","num","rate","rateType"}, } for k, v in pairs(t) do if tname == k then r