MariaDB 11.x - 更改序列重新启动不起作用？

Question

我正在尝试使用

ALTER SEQUENCE

重置我的序列，它表示 MariaDB 10.3+ 中支持它，因为他们引入了序列支持。

但是我在尝试使用序列所在表的

MAX(id) + 1

值重新启动序列时遇到错误。

根据 MariaDB 的帮助，看起来应该支持它，但我遇到了语法错误。

更改序列帮助 -

https://mariadb.com/kb/en/alter-sequence/

任何帮助表示赞赏..

MariaDB [bcfactory]> select * from job_SEQ;
+-----------------------+---------------+---------------------+-------------+-----------+------------+--------------+-------------+
| next_not_cached_value | minimum_value | maximum_value       | start_value | increment | cache_size | cycle_option | cycle_count |
+-----------------------+---------------+---------------------+-------------+-----------+------------+--------------+-------------+
|                     1 |             1 | 9223372036854775806 |           1 |        50 |       1000 |            0 |           0 |
+-----------------------+---------------+---------------------+-------------+-----------+------------+--------------+-------------+
1 row in set (0.000 sec)

MariaDB [bcfactory]> alter sequence job_SEQ RESTART WITH (select MAX(id) + 1 from job);
ERROR 1064 (42000): 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 '(select MAX(id) + 1 from job)' at line 1
MariaDB [bcfactory]> select version();
+---------------------------------------+
| version()                             |
+---------------------------------------+
| 11.2.2-MariaDB-1:11.2.2+maria~ubu2204 |
+---------------------------------------+
1 row in set (0.000 sec)

Answer 1

不，您不能只在需要值的地方使用子查询。为此，您需要使用动态 sql：

set @restart_sql:=concat('alter sequence job_SEQ restart with ',(select MAX(id) + 1 from job));
prepare restart_sequence from @restart_sql;
execute restart_sequence;
deallocate prepare restart_sequence;