Question

我在PHP中一次执行多个ms_sql查询时遇到问题：

以下是我正在尝试做的简化版本：

$updatesql = "UPDATE Pricing SET Price = '".$_POST['price1']."' WHERE PriceID = 1 ";
$updatesql = "UPDATE Pricing SET Price = '".$_POST['price2']."' WHERE PriceID = 2 ";
$updatesql = "UPDATE Pricing SET Price = '".$_POST['price3']."' WHERE PriceID = 3 ";
$updatesql = "UPDATE Pricing SET Price = '".$_POST['price4']."' WHERE PriceID = 4 ";
$updatesql = "UPDATE Pricing SET Price = '".$_POST['price5']."' WHERE PriceID = 5 ";
$updatesql = "UPDATE Pricing SET Price = '".$_POST['price6']."' WHERE PriceID = 6 ";
$updatesql = "UPDATE Pricing SET Price = '".$_POST['price7']."' WHERE PriceID = 7 ";
$updatesql = "UPDATE Pricing SET Price = '".$_POST['price8']."' WHERE PriceID = 8 ";

$executesql = mssql_query($updatesql);

当我逐个浏览它们时它们都可以工作，但是当我尝试一次执行它们时，只有最后查询才会被执行。

我正在尝试做什么？我出错的任何指针？对不起，对PHP很新。

Answer 1

那是因为你每次都要过度编写查询字符串。请尝试以下方法：

    $updatesql = '';
    for ($i = 1; $i < 9; $i++) {
        $updatesql .= "UPDATE Pricing SET Price = '".$_POST['price' + $i]."' WHERE PriceID = {$i}; ";
    }
    $executesql = mssql_query($updatesql);

Answer 2

您正在用新的查询覆盖自己的查询，因此最后只有您创建的最后一个查询才会在该变量中。

所以你无法执行所有这一切，执行所有你必须选择循环或;使用mysql的方法。

即使您可以在查询之前编写mysql_query，所以所有查询都将更新。

$updatesql = mssql_query("UPDATE Pricing SET Price = '".$_POST['price1']."' WHERE PriceID = 1 ");
$updatesql = mssql_query"UPDATE Pricing SET Price = '".$_POST['price2']."' WHERE PriceID = 2 ");
$updatesql = mssql_query"UPDATE Pricing SET Price = '".$_POST['price3']."' WHERE PriceID = 3 ");
$updatesql = mssql_query"UPDATE Pricing SET Price = '".$_POST['price4']."' WHERE PriceID = 4 ");
$updatesql = mssql_query"UPDATE Pricing SET Price = '".$_POST['price5']."' WHERE PriceID = 5 ");
$updatesql = mssql_query"UPDATE Pricing SET Price = '".$_POST['price6']."' WHERE PriceID = 6 ");
$updatesql = mssql_query"UPDATE Pricing SET Price = '".$_POST['price7']."' WHERE PriceID = 7 ");
$updatesql = mssql_query"UPDATE Pricing SET Price = '".$_POST['price8']."' WHERE PriceID = 8 ");

// $ executionql = mssql_query（$ updatesql）;

有很多方法可以在一个语句中执行查询。

Answer 3

试试这个

$updatesql = "UPDATE Pricing SET Price = '".$_POST['price1']."' WHERE PriceID = 1 ;";
$updatesql.= "UPDATE Pricing SET Price = '".$_POST['price2']."' WHERE PriceID = 2 ;";
$updatesql.= "UPDATE Pricing SET Price = '".$_POST['price3']."' WHERE PriceID = 3 ;";
$updatesql.= "UPDATE Pricing SET Price = '".$_POST['price4']."' WHERE PriceID = 4 ;";
$updatesql.= "UPDATE Pricing SET Price = '".$_POST['price5']."' WHERE PriceID = 5 ;";
$updatesql.= "UPDATE Pricing SET Price = '".$_POST['price6']."' WHERE PriceID = 6 ;";
$updatesql.= "UPDATE Pricing SET Price = '".$_POST['price7']."' WHERE PriceID = 7 ;";
$updatesql.= "UPDATE Pricing SET Price = '".$_POST['price8']."' WHERE PriceID = 8 ;";

$executesql = mssql_query($updatesql);

一次使用PHP执行多个SQL查询

3 个答案: