php 和 mysql 将记录从一张表复制到另一张表

2022-01-20 00:00:00 复制 php mysql

我想通过将记录从一张表移动到另一张表来归档学生.这是我尝试使用的代码:

I would like to archive a student by moving the record from one table to another. This is the code I am trying to use:

<?php
ini_set('memory_limit', '100M');
$sql="Select * from `register` where student_id=".$student_id;
$result=mysql_query($sql);
$row=mysql_fetch_array($result);

//Call the function to archive the table
//Function definition is given below
archive_record(archive,$row);

//Once you archive, delete the record from original table

$sql = "Delete from `register` where student_id=".$student_id;
mysql_query($sql);


function archive_record($archived_tablename,$row)
{
    $sql = "insert into $archived_tablename values(";
    $i=0;
    while($i<(count($row)-1))
    {
        $sql.="'".$row[$i]."',";
    }
    $i=$i+1;

    $sql.="'".$row[$i]."'";
    $sql.=")";

    mysql_query($sql);
    return true;
}

我遇到的问题是我收到错误:

Problem I am having is that i am getting error:

致命错误:第 XX 行/archive-student.php 中的内存不足(分配 80478208)(试图分配 80216043 字节)

除了有一个名为存档的列并从 0 更改为 1 之外，还有其他方法可以做到这一点吗?这是因为我有 30-50 页选择表的记录.:)

Is there any different way to do this, except for have a column called archive and changing from 0 to 1? This is because I have 30-50 pages selecting the table's records. :)

推荐答案

INSERT INTO archive_table
SELECT * FROM original_table WHERE id = 1

就这么简单.

如果表格有不同的列号、其他布局等，您也必须指定列:

If tables have different column number, other layout etc., you will have to specify columns :too

INSERT INTO archive_table(field1, field2, field3)
SELECT field7, field8, field9 FROM original_table WHERE id = 1

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