Question

我面临一个奇怪的错误。我在我的本地mac（brew）上安装了5.5.5-10.1.20-MariaDB，在我的prod服务器上安装了5.5.52-MariaDB（centos7）。我的本地数据库内容是来自我的服务器数据库的副本。我已在本地执行此查询：

## CREATE DIRECT RELATION BETWEEN JOURNAL AND PUBLICATION
INSERT INTO journal_publication (journal_id, `publication_id`) (
select issues.journal_id as journal_id, publications.id as publication_id from issues
join publications on issues.id = publications.`issue_id`
where publications.id Not In (select distinct publication_id from journal_publication)
);

它工作正常，执行时间不到一秒。现在，当我在我的prod服务器上尝试完全相同的查询时，查询永远不会结束并占用所有CPU。此外，我试图解析查询，它在我的本地工作正常：

id  select_type table   type    possible_keys   key key_len ref rows    Extra
1   PRIMARY issues  index   PRIMARY issues_journal_id_foreign   5   NULL    70993   Using index; Using temporary
1   PRIMARY publications    ref publications_issue_id_foreign   publications_issue_id_foreign   5   pubpeer.issues.id   1   Using where; Using index
2   MATERIALIZED    journal_publication index   NULL    PRIMARY 8   NULL    143926  Using index

而我的Prod上的相同查询返回错误：

You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INSERT INTO journal_publication (journal_id, `publication_id`) 
(select issues.j' at line 2

同样，两个DB的内容相同，主键和索引设置相同。对于记录，当我尝试执行此查询时：

select issues.journal_id as journal_id, publications.id as publication_id from issues
join publications on issues.id = publications.`issue_id`
where publications.id Not In (select distinct publication_id from journal_publication;

在本地或prod只需要一秒钟。

您是否有任何线索或流程可以帮助我了解这些差异？

感谢。

济

Answer 1

MariaDB服务器版本＆lt; 10.0仅支持EXPLAIN SELECT
MariaDB服务器版本＆gt; = 10.0另外支持EXPLAIN UPDATE，EXPLAIN INSERT和EXPLAIN DELETE

请注意，版本字符串5.5.5-10.1.20-MariaDB表示MariaDB 10.1.20，因为它只支持主要版本的1位数字，所以需要5.5.5前缀，因为MySQL复制会中断。 / p>

另见EXPLAIN UDATE/INSERT/DELETE in MySQL and MariaDB

插入查询在本地数据库上执行但不在服务器

1 个答案: