第一种是安装mysql ODBC,利用sql server的导出功能,选择mysql数据源,进行数据的直接导出,这种方法很简便,但是针对实际应用有很多弊端,最主要体现就是数据类型问题,首先,sql server数据库中的ntext,image等数据类型的数据无法直接写入到mysql数据库中
第一种是安装mysql ODBC,利用sql server的导出功能,选择mysql数据源,进行数据的直接导出,这种方法很简便,但是针对实际应用有很多弊端,最主要体现就是数据类型问题,首先,sql server数据库中的ntext,image等数据类型的数据无法直接写入到mysql数据库中,据说只要稍加改动就可以,可惜偶这只菜鸟还没想到如何改动,其次,因为偶在mysql中的数据库设计中将时间都设成int型(保存的是时间戳),所以在数据导过来后,就会出现冲突,再次,这种方法生成的mysql数据表的字段类型都不很合适,所以此种方法我觉得不能提倡。
第二种是利用php或asp脚本来实现数据的导入功能,这种方法需要编写程序,但灵活性大,操作也不是那么困难,一切都尽在你的掌握之中,现简单介绍一下该方法。前提条件是你的mysql环境已经搭建好了,先建好目标数据库,再将所有的表结构用sql语句生成,现在万事具备,只缺数据了。
可以通过下面的php脚本来实现sql server中mydb数据库的user表中数据向mysql中mydb数据库导入:
$cnx = odbc_connect('web', 'admin', '123456'); //'web'是sqlserver中mydb的数据源名, 'admin'是访问mydb的用户名,'123456'是访问mydb的密码 $cur= odbc_exec( $cnx, 'select * from user' ); //打开sql server中mydb数据库的user表 $num_row=0; $conn=mysql_pconnect("localhost","root","123456"); // 连接mysql @mysql_select_db('mydb',$conn) or die("无法连接到数据库,请与管理员联系!"); //打开mysql的mydb数据库 while( odbc_fetch_row( $cur )) //从sql server的mydb库中的user表逐条取出数据,如果对数据进行选择, 可在前面的select语句中加上条件判断 { $num_row++; $field1 = odbc_result( $cur, 1 ); // 这里的参数i(1,2,3..)指的是记录集中的第i个域, 你可以有所选择地进行选取,fieldi得到对应域的值,然后你可以对fieldi进行操作 $field2 = odbc_result( $cur, 2 ); $field3 = odbc_result( $cur, 3 ); $field4 = odbc_result( $cur, 4 ); $field5 = odbc_result( $cur, 5 ); $field6 = odbc_result( $cur, 6 ); $field5 = timetoint($field5); //这里是对sql server中的datetime类型 的字段进行相应转换处理,转换成我所需要的int型 $querystring = "insert into user (id,name,username,password,recdate) values('$field1','$field2','$field3','$field4','$field5')" ; mysql_query($querystring,$conn); } function timetoint($str){ $arr1=split(" ",$str); $datestr=$arr1[0]; $timestr=$arr1[1]; $arr_date=split("-",$datestr); $arr_time=split(":",$timestr); $year=$arr_date[0]; $month=$arr_date[1]; $day=$arr_date[2]; $hour=$arr_time[0]; $minute=$arr_time[1]; $second=$arr_time[2]; $time_int=mktime($hour,$minute,$second,$month,$day,$year); return $time_int; } ?> |
将该段脚本存成sql.php,在服务器上执行,就可以将服务器上sql server中mydb数据库的user表中的数据导入到mysql中mydb数据库的user表中去。其他表的操作与此雷同,就不赘述了。

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