php - 从 MYSQL 表中选择 10+ num_rows 结果

Question

有人能告诉我这个 mysql 查询有什么问题吗？

$p = mysql_query("SELECT name,subname FROM brands GROUP BY name WHERE 
having count(*) > 10 ORDER BY RAND() LIMIT 1")or die(mysql_error()); 

它说:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE having count(*) > 10 ORDER BY RAND() LIMIT 1' at line 1

Answer 1

HAVING 不使用 WHERE 子句，将其删除。

$p = mysql_query("SELECT name,subname FROM brands GROUP BY name  
having count(*) > 10 ORDER BY RAND() LIMIT 1")or die(mysql_error()); 

咨询:

• http://www.mysqltutorial.org/mysql-having.aspx
• http://dev.mysql.com/doc/refman/5.0/en/group-by-handling.html

您应该考虑切换到 PDO与 prepared statements或 mysqli_* with prepared statements ，因为 mysql_* 函数已弃用。