使用自定义搜索选项在两个表中搜索mysql数据

Question

嗨，朋友们，我在我的网站上有一个自定义搜索功能。搜索取决于两个表，例如， product_table

CREATE TABLE `product_table` (
`product_id` int(11) NOT NULL auto_increment, 
`product_name` varchar(100) NOT NULL, 
`country` varchar(200) NOT NULL, 
`added_time` timestamp NOT NULL default CURRENT_TIMESTAMP, 
PRIMARY KEY (`product_id`)); 

multiple_table

CREATE TABLE `multiple_table` (
`multi_id` int(11) NOT NULL auto_increment, 
`cat_id` int(11) NOT NULL, 
`product_id` int(11) NOT NULL, 
PRIMARY KEY (`multi_id`)); 

我给选项，由一个或多个领域的用户搜索广告作为product_name,country,cat_id,added_time

我搜索功能如下，

if(isset($_GET['s_button'])){ 
$sql2="SELECT a.product_id FROM product_table a, multiple_table b WHERE b.product_id= a.product_id "; 
$where=array(); 
$values = array(); 
$types = ''; 
if(!empty($_GET['search_cat'])){ 
$search_cat=clean($_GET['search_cat']); 
$where[]="AND cat_id='".$search_cat."'"; 
} 
if(!empty($_GET['product_country'])){ 
$country=clean($_GET['product_country']); 
$where[]="AND country='".$country."'"; 
} 
if(!empty($_GET['model'])){ 
$keyword=clean($_GET['model']); 
$where[]="AND product_name LIKE '%".$keyword."%'"; 
} 
$sql2 .= implode($where). " ORDER BY a.product_id "; 
}else{ 
$sql2 = "SELECT product_id FROM product_table ORDER BY Rand()"; 
} 

但是，这会产生一些不正确和数量巨大的结果，而且搜索需要太多时间。我不知道为什么。我听说过MYSQL VIEWs对于这样做有什么意义吗？还是我有任何简单的方法来实现这一点？感谢

Answer 1

你应该尝试这样的：

SELECT a.product_id FROM product_table a INNER JOIN multiple_table b ON b.product_id= a.product_id 

Answer 2

考虑是这样的：

<?php 
if(isset($_GET['s_button'])){ 
    $options = array(
     (object)array(
      "get_key"=>"search_cat", 
      "table_key"=>"cat_id" 
     ), 
     (object)array(
      "get_key"=>"product_country", 
      "table_key"=>"country" 
     ), 
     (object)array(
      "get_key"=>"model", 
      "table_key"=>"product_name", 
      "compare"=>"LIKE" 
     ) 
    ); 
    $parseOptions = function($element){ 
     $defaults = array("wildcards"=>"both"); 
     $settings = (object)array_merge($defaults, (array)$element); 
     if(isset($_GET[$settings->get_key]) && strlen($_GET[$settings->get_key])>0){ 
      $search = mysql_real_escape_string($_GET[$settings->get_key]); 
      switch($settings->compare){ 
       default: 
        return $settings->table_key."='$search'"; 
        break; 
       case 'LIKE': 
        switch($settings->wildcards){ 
         case 'both': 
          return $settings->table_key." LIKE '%$search%'"; 
          break; 
        } 
      } 
     } 
    }; 
    $where = array_map($parseOptions, $options); 
    $sql2="SELECT 
     products.product_id 
     FROM product_table AS products 
     LEFT JOIN multiple_table AS multi 
      ON products.product_id = multi.product_id"; 

    if(count($where)>0) $sql2 .= " WHERE ".implode(" AND ",$where); 
    $sql2 .= " ORDER BY product_id "; 
}else{ 
    $sql2 = "SELECT product_id FROM product_table ORDER BY Rand()"; 
} 

它会更容易扩大。