编辑：更新以包含一些当前的上下文代码，并以粗体添加问题
新手：
我将有20张左右的制造商表，每张表中都有15,000-100,000行零件。 PartNumber，Superceding Part Number，List Price，MFG价格，销售价格等信息将作为列存储。我希望能够在搜索框中输入一个部件号，并让它显示到目前为止匹配数字的所有部分，然后在输入更多数字时更新。
我目前有一个版本使用1个40,000个零件的表格，当我键入一些数字，如'0000'时，它将返回以0000开头的前5个部分，例如：000011,000013,00015,000023，和000025以及它们的一些相应信息。如果我再输入一个数字'00002'，它将只显示000023和000025.但是我希望这个搜索能够在数据库中的所有表格上运行，以防我不知道哪个制造商成功。
目前我有一个名为taft_test1的数据库，其中有两个名为ariens_prices和briggs_prices的表。每个表都包含相同的列，但可能没有在每个条目中填充数据。
有关最佳方式的任何想法吗？
有些人提到UNION哪个好，但我应该做20多个工会还是有更好的方法来布局数据库？
感谢帮助。
示例代码我工作：
partslookup.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Taft Power Equipment</title>
<script type="text/javascript" language="Javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script src="js/jquery.horizontalNav.js"></script>
<script>
// When document is ready...
$(document).ready(function() {
$('.full-width').horizontalNav({}); // Call horizontalNav on the navigations wrapping element
});
</script>
<script>
function showUser(str)
{
if (str=="")
{
document.getElementById("txtHint").innerHTML="";
return;
}
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","livesearch.php?q="+str,true);
xmlhttp.send();
}
</script>
<link rel="stylesheet" type="text/css" href="style.css" />
<!--[if lt IE 7]>
<link rel="stylesheet" type="text/css" href="style-ie.css" />
<![endif]-->
</head>
<body>
<div id="page-wrap">
<div id="inside">
<div id="header">
<a href="file:///C:/Users/ryan/Desktop/websites/ryan%20website/index.html"><img src="images/TaftLogo2.png" alt="header" /></a>
</div>
<div id="menu">
<nav class="horizontal-nav full-width horizontalNav-notprocessed">
<ul>
<li><a href="index.html">Home</a></li>
<li><a href="#">Work</a></li>
<li><a href="#">Blog</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Contact</a></li>
<li><a href="partslookup.php">Parts Look Up</a></li>
</ul>
</nav>
</div>
<div id="main-content">
<input id="test" class="auto" type="text" size="25" placeholder="Enter Part Here" onkeyup="showUser(this.value)"
<br><br><br>
<div id="txtHint"><b>Part info will display here.</b></div>
<br><br><br><br>
</div>
<div style="clear: both;"></div>
<div id="footer">
<p>© Copy Right Taft Power Equipment Corp</p>
</div>
</div>
</body>
</html>
livesearch.php
<?php
$q = $_GET['q'];
echo "Part Entered: $q <br><br>";
$dbhost = 'localhost:3306';
$dbuser = 'root';
$dbpass = 'password';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
if(! $conn )
{
die('Could not connect: ' . mysql_error());
}
$sql = "SELECT * FROM `briggs_prices` WHERE briggs_prices.Description LIKE '$q%'
UNION
SELECT * FROM `ariens_prices` WHERE ariens_prices.Description LIKE '$q%'
LIMIT 0, 50 ";
mysql_select_db('taft_test1');
$retval = mysql_query( $sql, $conn );
if(! $retval )
{
die('Could not get data: ' . mysql_error());
}
echo "<table border='1'>
<tr>
<th>Part#</th>
<th>Description</th>
<th>Price</th>
</tr>";
while($row = mysql_fetch_array($retval, MYSQL_ASSOC))
{
echo "<tr>";
echo "<tr>";
echo "<td>" . $row['Description'] . "</td>";
echo "<td>" . $row['SuperNum'] . "</td>";
echo "<td>" . $row['LIST1'] . "</td>";
echo "</tr>";
}
echo "</table>";
while($row = mysql_fetch_array($retval, MYSQL_ASSOC))
{
echo "Part# :{$row['Description']} ".
"Desc : {$row['SuperNum']} ".
"Cost : {$row['LIST1']} ".
"--------------------------------<br>";
}
//echo "Fetched data successfully\n";
mysql_close($conn);
?>
答案 0 :(得分：2)
您需要更好的数据库布局。类似的东西：
(P) means Primary Key
(F) means Foreign Key
(I) means Indexed
manufacturers
id unsigned int(P)
name varchar(50)
...
+----+--------+-----+
| id | name | ... |
+----+--------+-----+
| 1 | Ariens | ... |
| 2 | Briggs | ... |
| .. | ...... | ... |
+----+--------+-----+
parts
id unsigned int(P)
number char(50)(I)
manufacturer_id unsigned int(F manufacturers.id)
name varchar(75)
superceding_part_id unsigned int(F parts.id) // Allow NULL
list_price double
manufacturer_price double
sale_price double
...
+----+--------+-----------------+----------+---------------------+------------+--------------------+------------+-----+
| id | number | manufacturer_id | name | superceding_part_id | list_price | manufacturer_price | sale_price | ... |
+----+--------+-----------------+----------+---------------------+------------+--------------------+------------+-----+
| 1 | 000011 | 1 | Widget A | NULL | 1.00 | .50 | .90 | ... |
| 2 | 000012 | 1 | Widget B | 1 | 2.00 | .75 | 1.75 | ... |
| 3 | 000013 | 2 | Widget A | NULL | 1.15 | .70 | 1.00 | ... |
| .. | ...... | ............... | ........ | ................... | .......... | .................. | .......... | ... |
+----+--------+-----------------+----------+---------------------+------------+--------------------+------------+-----+
答案 1 :(得分：1)
示例$part是您输入的变量。这是查询
$query = 'SELECT TOP 5 PartNumber FROM yourTable WHERE PartNumber LIKE "'.$part.'%"'
答案 2 :(得分：0)
嘿，如果所有表中都有相同的列，最好尝试UNION从单个查询中获取行。试一试
WHERE `PartNumber` LIKE "0001%"