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ACCESS数据库向MySQL快速迁移小程序(一)_MySQL

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Release: 2016-06-01 14:12:12
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Access


  为开发的一个信息管理系统从以前试运行的开发机器上(Windows NT + IIS4.0 + Access)迁移至一台真正的Linux服务器上(Apache1.3.12 + PHP 4.03 + MySQL 3.23.26),其中数据库中的几十个表的内容迁移,开始让我小费了一些周折,从网上也下载了一些MySqL的客户软件或是数据库管理软件,写得较好的软件均有数据迁移功能,但其迁移方式不外乎两种,一种是采用文件引入方式,此种方式在处理数据库中有和分隔符相同的字符时,会产生错误,尤其是在处理ACCESS中的Memo字段,很容易出错,最后导致导出后的数据不是多了就是少了。而另一种支持ODBC直接导入的功能较强,基本可无错误地导入各个表的内容,但很遗憾,这必须是建立在ACCESS中表格的字段是英文是才可以,如在ACCESS中字段是中文名,一般也出错,不能成功导入。
  
  为此我只好花了点时间写了两个小程序,用于将ACCESS数据库的内容向MySQL迁移,经使用,效果还不错,特在此写出奉献给各位一试或评判。
  
  先概述一下使用方法,
  1,将ACCESS的数据库建立一个"system DSN";
    2,根据ACCESS数据库中各表的名称,在MySQL中建立相应的各个空表;
  3,运行fdlist.php;
    4,运行import.php;
    5,每运行一次3,4步可迁移一个表,然后修改fdlist.php中的ACCESS源表名和MySQL中的目标表名,再运行3,4步,直至迁移所有的表,
  
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  以下为 fdlist.php源程序
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~   
  
  
  
  
   
  
    $dbconnection = @mysql_connect("yourmysqlserver", "mysqlaccount", "mysqlpassword") 
    
      or die ("can not connect to database server");
    
    @mysql_select_db("yourdatabase") 
         
         or die("

No Database,

") ; 
  
    $odbc_table = "youroriginaltable" ;  // The original table name in your ODBC database
  
    $mysql_table = "yournewtable" ;    // The new table name in your Mysql Database.
  
  ?>
  
  
  
  

  

Fields List of Two tables


  

  
  
  
    $conn = odbc_connect("task", "", "");
    
    $odbc_query = "select * from " . $odbc_table . " where 1=2";
    
    $recordsid = odbc_exec($conn, $odbc_query);
    
    $idcounts = odbc_num_fields( $recordsid ) ;
  
    $fdlist1 = "" ;
    
    for ( $i = 1 ; $i     
      $fdlist1 .=  odbc_field_name($recordsid,$i)."," ;
    
    echo "

Fd1 = " . $fdlist1 ;
    
    $fdlist1 = substr($fdlist1,0,strlen($fdlist1)-1) ;
    
    $fdlist2 = "" ;
  
    $sqlquery = "select * from " . $mysql_table . " where 1=2 " ; 
    
    $records2 = mysql_query ($sqlquery) ;
          
    $idcount2 = mysql_num_fields ( $records2 ) ;
       
    for ( $i = 0 ; $i     
      $fdlist2 .= mysql_field_name($records2,$i )."," ;
      
    echo "

FD2 = " . $fdlist2 ;
  
    $fdlist2 = substr($fdlist2,0,strlen($fdlist2)-1) ;
      
    $fp = fopen ("fdlist.txt","w") ;
    
    fwrite ($fp,$ctable) ;
    
    fwrite ($fp,"n");
    
    fwrite ($fp,$fdlist1) ;
    
    fwrite ($fp,"n");
    
    fwrite ($fp,$etable) ;
    
    fwrite ($fp,"n") ;
    
    fwrite ($fp,$fdlist2) ;
    
    fclose($fp) ;
      
    odbc_close($conn);
  
    if ( $idcount2 != $idcounts ) {
    
      echo "


". 
        
        "

The fields of two tables doesn't match" ;
  
      echo "

ODBC_table Fields = " . $idcounts;
  
      echo "

MySQL_table Fields = " . $idcount2;
    }
  ?>
  
  

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