// 纯JS省市区三级联动 // 2011-11-30 by http://www.cnblogs.com/zjfree var addressInit = function (_cmbProvince, _cmbCity, _cmbArea, defaultProvince, defaultCity, defaultArea) { var cmbProvince = document.getElementById(_cmbProvince); var cmbCity = document.ge
真不简单!! 一:使用select语句进行查询 语法: SELECT <列名> FROM <表名> [WHERE <查询条件表达式>] [ORDER BY <排序的列名>[ASC或DESC]] eg1: SELECT SCode,SName,SAddress FROM Students WHERE SSEX = 0 ORDER BY SCode 二:查询所有列和行: eg: