如何构建一个mysql查询以使用多个AND运算符？

Question

例如"SELECT * FROM date WHERE name = 'etc' AND lastname = 'etc' AND etc='etc'";

Answer 1

你完全按照刚刚说的那样去做。

Answer 2

假设您正在讨论基于PHP输入变量构造查询

$fields = array( "name", "lastname", "etc" ) ;
foreach( $fields as $field)
{
   $clause[]=$field."='".mysql_real_escape_string($_POST[$field])."'";
}
$query = "SELECT * from `date` where "
         .implode( " AND ", $clause );

Answer 3

你会这样做

eg "SELECT * FROM date WHERE name = 'etc' AND lastname = 'etc' AND etc='etc'";