需求是把之前网站的一个mssql2000的数据库转换成mysql数据库，并且新的网站采用不同的程序，因此还要把数据库中的数据根据字段的不同，和字段数据规则的不同进行转换。
1.不同数据库类型直接的数据库转换
navicat是个很好的数据库管理软件，可以用它进行不同类型数据库直接的转换，以下链接详细说明如何用navicat将mssql2000数据库转换成mysql数据库。
2.不同结构数据库之间的数据转换
不同数据库结构之间的数据转换存在几个问题，①字段不同，甚至无法一一对应 ②字段格式不同，要转换成目标数据库字段的设计格式 ③sql语句结合php程序转换
这是把之前一个downplus下载系统的数据库转换成phpcms的数据库。
直接上代码，有这方面需求的研究代码吧。
站点1 软件站
①导入所有软件到软件表v95_soft
insert into v95_soft(id,catid,title,soft,soft_name,pinyin,thumb,keywords,size,start,inputtime,updatetime,auth,property)
select softid,softclassid,seotitle,appname,softname,softphoneticism,IcoImage,softkeywords,softsize,softscore,
unix_timestamp(SoftInsertDate),unix_timestamp(softcreatedate),softlicence,softproperty
from dp_softlist;
②写sql设status为99
update v95_soft set status=99;
③到后台更新全站url。然后更新title为空的，软件名称
update v95_soft set title=soft_name where title='';
④导入到v95_soft_date
insert into v95_soft_data(id,content,language,website,icon,softos)
select softid,softintro,softlanguage,softauthorurl,IcoImage,softos
from dp_softlist;
⑤执行php转换程序，导入下载地址
http://www.phprm.com/admin.php?m=admin&c=index&a=down
db->query($sql);
while ($r = mysql_fetch_assoc($result)) {
//$softid = 11;
$softid = $r['id'];
$sql = "select fileurlname,fileurl,fileftpid from dp_softfiles where softid = $softid ";
$downfile = $this->db->query($sql);
$downfiles = array();
while ($r = mysql_fetch_assoc($downfile)) {
$isbigfile = 0;
if (!$r['fileurlname']) {
$sql = "select soft_name from v95_soft where id = $softid ";
$result2 = $this->db->query($sql);
while ($r2 = mysql_fetch_assoc($result2)) {
$soft_name = $r2['soft_name'];
}
$r['fileurlname'] = $soft_name;
}
if (12 == $r['fileftpid']) {
$isbigfile = 1;
}
$downfiles[] = array(
'fileurl' => $r['fileurl'],
'filename' => $r['fileurlname'],
'isbigfile' => $isbigfile
);
}
$downfiles = array2string($downfiles);
//var_dump($downfiles);exit;
$sql = "update v95_soft_data set downfiles = '$downfiles' where id = $softid ";
$this->db->query($sql);
}
echo 'OK';
}
?>⑥软件单位和大小转换
update v95_soft set size=size/1000,unit='MB' where size>1000 and size
update v95_soft set size=size/1000000,unit='GB' where size>1000000;
⑦导入标签，到v95_keyword和v95_keyword_data
insert into v95_keyword(id,keyword) select tagid,tagname from dp_tag;
update v95_keyword set siteid=1;
⑧执行php转换程序，匹配标签到关键字
http:///admin.php?m=admin&c=index&a=transe
php代码：
db->query($sql);
while ($r = mysql_fetch_assoc($result)) {
//var_dump($r);exit;
$tags = $r['softidlist'];
$tags = explode(",", $tags);
$tags = array_filter($tags);
//var_dump($tags);exit;
$tagid = $r['tagid'];
//echo $tagid;exit;
foreach ($tags as $tag) {
$sql = "insert into v95_keyword_data(tagid,siteid,contentid) values('$tagid','1','$tag')";
$this->db->query($sql);
}
}
echo 'OK';
}
?>调整格式
update v95_keyword_data set contentid=CONCAT(contentid,'-12');
⑩点击率
insert into v95_hits(hitsid,catid) select id,catid from v95_soft;
//可以不用转，太慢了
update v95_hits as a left join dp_softlist as b on a.hitsid=b.softid
set a.weekviews=b.softweekhits,a.monthviews=b.softmonthhits,a.dayviews=b.softdayhits,a.views=b.softallhits;
update v95_hits set hitsid=concat('c-12-',hitsid);
十一 相关文章
http:///admin.php?m=admin&c=index&a=related （最后执行，很慢）
php代码：
db->query($sql);
while ($r = mysql_fetch_assoc($result)) {
$softid = $r['id'];
$keywords = $r['keywords'];
$keywords = explode(",", $keywords);
$related = '';
foreach ($keywords as $keyword) {
$sql = "select softidlist from dp_tag where tagname='$keyword' ";
$result2 = $this->db->query($sql);
while ($r2 = mysql_fetch_assoc($result2)) {
$related = $related . ',' . $r2['softidlist'];
}
}
$related = explode(",", $related);
$related = array_filter($related);
shuffle($related);
$related = array_slice($related, 0, 10);
$related = implode("|", $related);
$sql = "update v95_soft_data set relation = '$related' where id = $softid ";
$this->db->query($sql);
}
echo 'OK';
}
?>站点2 单机站
①由于类别不同，要先把原先类别改成现在的类别id
update downtb set ClassID=217 where ClassID=1;
update downtb set ClassID=218 where ClassID=2;
update downtb set ClassID=219 where ClassID=3;
update downtb set ClassID=220 where ClassID=4;
update downtb set ClassID=221 where ClassID=5;
update downtb set ClassID=222 where ClassID=6;
update downtb set ClassID=223 where ClassID=7;
update downtb set ClassID=224 where ClassID=8;
update downtb set ClassID=225 where ClassID=9;
update downtb set ClassID=226 where ClassID=10;
update downtb set ClassID=233 where ClassID=11;
②导入主表到v95_danji
insert into v95_danji(id,catid,title,thumb,soft_name,size,inputtime,updatetime,auth,language,downurl)
select DownID,ClassID,SeoTitle,thumb,DownName,Sizes,unix_timestamp(addtime),unix_timestamp(addtime),
Shouquan,Languages,DownIntro1 from downtb;
③后台更新全站url，然后设status为99，没有seo标题的采用单机游戏名称
update v95_danji set status=99;
update v95_danji set title=soft_name where title='';
④大小单位转换，下载地址格式调整
update v95_danji set size=size/1000,unit='MB' where size>1000 and size
update v95_danji set size=size/1000000,unit='GB' where size>1000000;
update v95_danji set downurl=replace(downurl,'@@**@@本地下载','');
⑤修改下载地址
要判断单机游戏填写的地址
如果填写的
game=z1.9553.com
game2=z2.9553.com
以此类推
/admin.php?m=admin&c=index&a=downurl（废弃）
⑥导入到v95_danji_data
insert into v95_danji_data(id,content,gameid) select DownID,DownIntro,game_id from downtb;
⑦单机标签转换
1、新增单机站标签到v95_keyword表
insert into v95_keyword(id,keyword) select TagID+31616,TagName from tagtb;
update v95_keyword set siteid=2 where siteid=0;
2、执行php程序
此时记住当前v95_keyword中siteid为1的最大id，更改php程序，再填入keywords,执行
http:///admin.php?m=admin&c=index&a=danji
php代码：
db->query($sql);
while ($r = mysql_fetch_assoc($result)) {
$id = $r['DownID'];
$ToTagIDs = explode(",", $r['ToTagIDs']);
$ToTagIDs = array_filter($ToTagIDs);
foreach ($ToTagIDs as $key => $value) {
$ToTagIDs[$key] = $value + 31682;
}
//var_dump($ToTagIDs);exit;
foreach ($ToTagIDs as $tagid) {
$sql = "select keyword from v95_keyword where id=$tagid ";
$keywords = $this->db->query($sql);
while ($r = mysql_fetch_assoc($keywords)) {
$keyword[] = $r['keyword'];
}
}
$new_keyword = implode(",", $keyword);
$sql = "update v95_danji set keywords='$new_keyword' where id=$id";
$this->db->query($sql);
unset($keyword);
unset($ToTagIDs);
}
echo 'OK';
}
?>3、执行php程序
http:///admin.php?m=admin&c=index&a=danji2
php代码
db->query($sql);
while ($r = mysql_fetch_assoc($result)) {
$contentid = $r['id'];
$keywords = $r['keywords'];
$tags = explode(",", $keywords);
foreach ($tags as $tag) {
$sql = "select id from v95_keyword where keyword='$tag' and siteid=2";
$id = $this->db->query($sql);
while ($r = mysql_fetch_assoc($id)) {
$id = $r['id'];
$sql = "insert into v95_keyword_data(tagid,siteid,contentid) values('$id',2,'$contentid')";
$this->db->query($sql);
}
}
unset($tags);
}
echo 'OK';
}
?>4、修改v95_keyword_data表siteid为2的contentid格式
update v95_keyword_data set contentid=CONCAT(contentid,'-14') where siteid=2;
⑧使点击率可用
insert into v95_hits(hitsid,catid) select CONCAT('c-14-',id),catid from v95_danji;
文章网址:
随意转载^^但请附上教程地址。