bug yang

摘要： 1、mysql合并某个字段，并用逗号隔开http://chunfengxixi.iteye.com/blog/1042582MySQL中group_concat函数完整的语法如下：group_concat([DISTINCT] 要连接的字段 [Order BY ASC/DESC 排序字段] [Separator '分隔符'])2、查找字符串是否在某个字段里面select *from 表whereFIND_IN_SET(值,字段)select *from 表where ! FIND_IN_SET(值,字段) 阅读全文

摘要： var worker = new SharedWorker('work.js'); worker.port.addEventListener('message', function(e) { alert(e.data); }, false); worker.port.start(); worker.port.postMessage(msg);var connect_number = 0; onconnect = function(e) { connect_number =connect_number+ 1; var port = e.ports[0]; port 阅读全文