问题描述
我想从本地表向远程表插入新行,我已经为它制作了一个 php 脚本,但它不起作用.
I want to insert new rows from local table to remote table, i have made a php script for it but it is not working.
远程和本地 - 数据库、表和字段相同.
Remote and local - database, table and fields are same.
我就是这样做的
//connection
$remote_hostname='xxx.xxx.xxx.xxx:3306';
$hostname='localhost';
$username = 'username';
$password = 'password';
$remote_connection = mysql_connect($remote_hostname, $username, $password);
$connection = mysql_connect($hostname, $username, $password);
$tablename="pc_games";
$database = 'games';
// some row count here $remoterows
$local_query = "SELECT * FROM $tablename LIMIT 100 OFFSET $remoterows";
$local_result = mysql_query($local_query, $connection) or trigger_error(mysql_error());
while($list=mysql_fetch_array($local_result))
{
$remote_update=mysql_query("INSERT INTO $tablename SELECT * from $tablename");
$remote_update_result = mysql_query($remote_update, $remote_connection) or trigger_error(mysql_error());
}
这不起作用并显示错误 Duplicate entry '1' for key 'PRIMARY'
,但没有重复的条目.
This is not working and showing error Duplicate entry '1' for key 'PRIMARY'
, but there is no duplicate entry.
如果我这样做的话,新行就会被插入到远程数据库中.
If i do it this way it works, new rows get inserted into remote database.
while($list=mysql_fetch_array($local_result))
{
$id=$list['id'];
$pflink=$list['pflink'];
$image=$list['image'];
$pagelink=$list['pagelink'];
$title=$list['title'];
// and so on...
$remote_update=mysql_query("INSERT INTO $tablename SET id='$id', image='$image', pagelink='$pagelink', title='$title'......");
$remote_update_result = mysql_query($remote_update, $remote_connection) or trigger_error(mysql_error());
}
我在数据库中有很多列,也有很多数据库,我想用第一种方式,因为我想将这些代码重新用于另一个数据库,只需更改 $database
和 >$tablename
在另一个数据库的 require 文件中.
I have a many colums in database and also many database, i want to do it the first way, as i want to re use these codes for another database with just changing $database
and $tablename
in require file for another database.
请查看并建议任何可能的方法.
Please see and suggest any possible way to do it.
推荐答案
您不能在一个请求中跨越本地和远程查询:
You cannot span a local and remote query in one request:
$remote_update=mysql_query("INSERT INTO $tablename SELECT * from $tablename");
这应该从本地选择获取数据并将其插入到远程数据库?
This is supposed to get data from the local select and insert it into the remote database?
查询对 1 个数据库进行操作,并且仅对 1 个数据库进行操作.您正在尝试从表中获取数据并将其插入同一个表中.当然,这为键 'PRIMARY' 提供了一个 Duplicate entry '1'
The query operates on 1 database, and 1 database only. You are trying to fetch data from a table and insert it on the same table. And of course, this gives a Duplicate entry '1' for key 'PRIMARY'
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