你在 Oracle Linux 上安装了 MySQL 8,查看以下变量和目录:
Mysql> SHOW GLOBAL VARIABLES
WHERE Variable_name='tmpdir'
OR Variable_name='tmp_table_size';
+----------------+-----------+
| Variable_name | Value |
+----------------+-----------+
| tmp_table_size | 16777216 |
| tmpdir | /tmp |
+----------------+-----------+
Shell> cd /var/lib/mysql
Shell> ls -1 | grep temp
drwxr-x---. 2 mysql mysql 4096 Dec 11 14:05 #innodb_temp
关于磁盘临时表,哪个说法正确?