PHP mySQL搜索2个字段的连接信息

Question

我有一个正常运行的mySQL搜索系统。

mysql_query("SELECT * FROM electors WHERE constituency = '$constituency' AND ward = '$ward' AND (surname LIKE '$q' OR first_name LIKE '$q') LIMIT 18");

我还要搜索输入的术语（包括空格）是否为first_name ' ' surname.这是如何完成的连接。

Answer 1

我认为你需要CONCAT：

mysql_query("SELECT * FROM electors WHERE constituency = '$constituency' AND ward = '$ward' AND (surname LIKE '$q' OR first_name LIKE '$q' OR CONCAT(first_name,' ',surname) LIKE '$q') LIMIT 18");

你可以减少到：

mysql_query("SELECT * FROM electors WHERE constituency = '$constituency' AND ward = '$ward' AND CONCAT(first_name,' ',surname) LIKE '%$q%' LIMIT 18");

考虑将它作为一个full_name字段，然后你可以出于速度原因对其进行索引。