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多个查询条件的sql话语的拼写技巧,求指点

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Release： 2016-06-13 12:38:39
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多个查询条件的sql语句的拼写技巧,求指点。
多个查询条件的sql语句的拼写技巧,求指点。

<br />
$sql="select * from tb1";<br />
if($id=$_GET['id'])<br />
{<br />
	$where.=" where id like "%$id%"";<br />
}<br />
if($name=$_GET['name'])<br />
{<br />
	$where.=" where name like "%$name%"";<br />
}<br />
<br />
//当id有值的时候<br />
sql=select * from tb1 where id like "%$id%"<br />
//当name有值的时候<br />
sql=select * from tb1 where name like "%$name%"<br />
<br />
//当同时又值的时候，sql就出错了<br />
sql=select * from tb1 where name like "%$name%" where where id like "%$id%" <br />
<br />
//当然你可以说用<br />
if($id=$_GET['id']&&$name=$_GET['name'])<br />
{<br />
	where.= "and";<br />
}<br />
Copy after login

我举的例子只有两个条件，实际项目中我这里有十几个条件，这种方式肯定不行。
求更好的拼接方式

Related labels：
like name nbsp sql where
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