blocks|key|2158778|text|您希望使用WHERE子句。您可以使用boolean+operators连接多个conditions，例如AND或OR。例如：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2158779|SELECT+...+WHERE
++++type+=+123
++++AND+rent+BETWEEN+100+AND+200
++++AND+city+=+567
++++AND+area+LIKE+'%25Name+of+an+area%25'|code-block|syntax|javascript|2158780|entityMap|0|LINK|mutability|MUTABLE|url|http://dev.mysql.com/doc/refman/5.0/en/logical-operators.html|1|http://dev.mysql.com/doc/refman/5.0/en/comparison-operators.html^0|5|5|1G|3|1K|2|I|H|0|13|A|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]|$9|14|A|15|1|16]]|E|$]]|$1|F|3|G|5|H|7|17|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]|S|$5|N|O|P|E|$Q|T]]]]

You want to use the <code>WHERE</code> clause. You can have multiple <a href="http://dev.mysql.com/doc/refman/5.0/en/comparison-operators.html" rel="nofollow noreferrer">conditions</a> joined by <a href="http://dev.mysql.com/doc/refman/5.0/en/logical-operators.html" rel="nofollow noreferrer">boolean operators</a> such as <code>AND</code> or <code>OR</code>. For example:

<pre><code>SELECT ... WHERE
 type = 123
 AND rent BETWEEN 100 AND 200
 AND city = 567
 AND area LIKE '%Name of an area%'
</code></pre>

blocks|key|2153292|text|大概是这样的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2153293|SELECT+*
FROM+ads
WHERE+type+=+'Living+House'
AND+rent+>+50+AND+rent+<+300
AND+city+=+'London'
AND+area+LIKE+'%25westminster%25'|code-block|syntax|javascript|2153294|您可以查看W3School's+SQL+Tutorial以获取有关SQL基础的更多信息。|offset|length|2153295|entityMap|0|LINK|mutability|MUTABLE|url|http://www.w3schools.com/SQl/default.asp^0|0|0|5|N|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Something like that :

<pre><code>SELECT *
FROM ads
WHERE type = 'Living House'
AND rent &gt; 50 AND rent &lt; 300
AND city = 'London'
AND area LIKE '%westminster%'
</code></pre>

You can take a look at <a href="http://www.w3schools.com/SQl/default.asp" rel="nofollow noreferrer">W3School's SQL Tutorial</a> for more informations about SQL basics.

blocks|key|4311921|text|从MySQL表中选择记录是最基本的任务。我推荐你阅读W3schools+tutorial+on+SQL。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4311922|只需一个简单的SELECT查询即可完成此处所需的操作：|4311923|//Connecting+to+MySQL+and+selecting+DB
mysql_connect('server',+'user',+'password');
mysql_select_db('database');

//Actual+SELECT+query
$qh+=+mysql_query("SELECT+*+FROM+table_name+WHERE+city='".$_POST['city']."'+AND+rent='".$_POST['rent']."'+AND+area='".$_POST['area']."'");

//Getting+query+results+by+rows
while($row+=+mysql_fetch_assoc($qh))
{
+++//Do+something+with+$row+here
}|code-block|syntax|javascript|4311924|编辑：我使用$_POST变量只是为了简单。请注意，在以这种方式在查询中使用它之前，应该始终检查/验证它的内容。(防止SQL+injection)|style|BOLD|CODE|4311925|entityMap|0|LINK|mutability|MUTABLE|url|http://www.w3schools.com/SQl/default.asp|1|http://cs.wikipedia.org/wiki/SQL_injection^0|Q|I|0|0|0|0|0|3|6|6|1M|D|1|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@$A|10|B|11|1|12]]|C|$]]|$1|D|3|E|5|6|7|13|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|14|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|15|8|@$A|16|B|17|M|N]|$A|18|B|19|M|O]]|9|@$A|1A|B|1B|1|1C]]|C|$]]|$1|P|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]]|Q|$R|$5|S|T|U|C|$V|W]]|X|$5|S|T|U|C|$V|Y]]]]

Selecting records from MySQL table is basic task. I recommend you to read <a href="http://www.w3schools.com/SQl/default.asp" rel="nofollow noreferrer">W3schools tutorial</a> on SQL.

What you want here is done with one simple SELECT query:

<pre><code>//Connecting to MySQL and selecting DB
mysql_connect('server', 'user', 'password');
mysql_select_db('database');

//Actual SELECT query
$qh = mysql_query("SELECT * FROM table_name WHERE city='".$_POST['city']."' AND rent='".$_POST['rent']."' AND area='".$_POST['area']."'");

//Getting query results by rows
while($row = mysql_fetch_assoc($qh))
{
 //Do something with $row here
}
</code></pre>

EDIT:
I used <code>$_POST</code> variable just for simplicity. Note that you should always check/validate it's content before using it in a query this way. (To prevent <a href="http://cs.wikipedia.org/wiki/SQL_injection" rel="nofollow noreferrer">SQL injection</a>)

I want to write a search query that search on the criteria like city, rent, area. i am new to database and sql queries. How to write query. Please help. Any suggestions will be highly appreciated. My form snapshot is here ->> 

<img src="https://farm3.static.flickr.com/2658/4049101771_f3fcd2c7f7.jpg" alt="Form Snapshot">

How to write a search query for this form

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想写一个搜索查询，根据城市，租金，面积等条件进行搜索。我是数据库和sql查询的新手。如何编写查询。请帮帮忙。任何建议都将受到高度赞赏。我的表单快照在这里->>​​

问如何编写此表单的搜索查询
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问如何编写此表单的搜索查询EN