一.问题 Postgresql中无则插入的使用方法INSERT INTO WHERE NOT EXISTS,用法请参考样例. 二.解决方案 (1)PostgresSQL INSERT INTO test_tab(name,sex,address,lastEndTime,createTime) SELECT , FROM () tmp WHERE NOT EXISTS (Select FROM test_tab ') (2)MySQL(使用系统临时表DUAL) INSERT INTO `test_
Snort中pcre和正则表达式的使用 1. 题目描述 If snort see two packets in a TCP flow with first packet has "login" or "Initial" in payload, destination port is 3399; and second packet has a "IPv4Address:Port"string(E.g. 123.45.6.7:8080) in pay
今天早上在Yahoo的邮件列表里看到一篇颇有意思的讨论,标题为RESTful vs. unRESTful: Session IDs and Authentication(51CTO编者注:意为REST对非REST,Session ID与验证).文中让发起讨论的朋友大惑不解的是这样一个问题:为什么在请求中传递SessionID被普遍认为是unRESTful的,而将用户的credentials包含在每个请求里又是一种非常RESTful的做法.看了他接下来对于REST架构风格中"statelessne