php - 如何解决 "ORDER BY clause is not in SELECT list"导致 MySQL 5.7 的 SELECT DISTINCT 和 ORDER BY

Question

我安装了新的 Ubuntu，但我的代码遇到了 MySQL 问题。

( ! ) Warning: PDOStatement::execute(): SQLSTATE[HY000]: General error: 3065 
Expression #2 of ORDER BY clause is not in SELECT list, references column 'clicshopping_test_ui.p.products_date_added' which is not in SELECT list; this is incompatible with DISTINCT 
in /home/www//boutique/includes/OM/DbStatement.php on line 97s

似乎 MySQL 5.7 不允许这样的请求:

select .... distinct with  order by rand(), p.products_date_added DESC

如果我使用它，它会起作用:

select distinct .... with  order by rand(), 

如何解决这种情况？

PHP 中的我的 SQL 请求

 $Qproduct = $OSCOM_PDO->prepare('select distinct p.products_id,
            p.products_price
            from :table_products p left join :table_specials s on p.products_id = s.products_id
            where products_status = :products_status
            and products_view = :products_view
            and p.products_archive = :products_archive
            order by rand(),
            p.products_date_added DESC
            limit :products_limit');
                  $Qproduct->bindInt(':products_status', 1);
                  $Qproduct->bindInt(':products_view', 1);
                  $Qproduct->bindInt(':products_archive', 0);
                  $Qproduct->bindInt(':products_limit', 
                  (int)MODULE_FRONT_PAGE_NEW_PRODUCTS_MAX_DISPLAY);

Answer 1

如果您可以控制服务器并且正在运行无法轻易更改的遗留代码，您可以 adjust the SQL mode of the server并在启动期间通过运行查询删除“only_full_group_by”

SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));

或通过将 sql_mode='' 添加到您的 my.cnf 文件。

显然，如果有可能，最好更改您的代码，但如果没有，这将禁用该警告。