Php 通过索引提高数据库性能
当我单击一个按钮,删除数据库表(名为order)中的记录并将其插入另一个具有相同属性的数据库表(名为complete)时,就会执行以下代码Php 通过索引提高数据库性能,php,mysql,performance,indexing,increment,Php,Mysql,Performance,Indexing,Increment,当我单击一个按钮,删除数据库表(名为order)中的记录并将其插入另一个具有相同属性的数据库表(名为complete)时,就会执行以下代码 <?php include("includes/db.php"); // contains database connection if( isset($_GET['del']) ) { $id = $_GET['del']; $sql1="INSERT INTO complete
<?php
include("includes/db.php"); // contains database connection
if( isset($_GET['del']) )
{
$id = $_GET['del'];
$sql1="INSERT INTO complete
(`OrderNo.`,`NIC`,`DP`,`Address`,`DPTime`,`Telephone`,`Email`,
`Image1`,`ImageName1`,
`Image2`,`ImageName2`,
`Image3`,`ImageName3`)
SELECT
`OrderNo.`,`NIC`,`DP`,`Address`,`DPTime`,`Telephone`,`Email`,
`Image1`,`ImageName1`,
`Image2`,`ImageName2`,
`Image3`,`ImageName3`
FROM `order`
WHERE `OrderNo.` = '$id' ";
$res1= mysqli_query($db,$sql1) or die("Failed".mysqli_error($db));
$sql2= "DELETE FROM `order` WHERE `OrderNo.` = '$id' ";
$res2= mysqli_query($db,$sql2) or die("Failed".mysqli_error($db));
echo "<meta http-equiv='refresh' content='0;url=vieworders.php'>";
}
?>
您只需运行一个MySQL客户端(console MySQL、phpMyAdmin、heidisql、workbanch)并执行它。创建索引查询将只使用一次。因此,在上述代码中不需要它,请注意这段时间!它会给你语法错误。