Centos7 installation mysql prompt / usr/bin/perl is required, how to solve it?

it is said on the Internet that perl has not been added to the environment variable, but I can use perl-v to view the version information, indicating that the environment variable has been added. What"s going on here.

my perl installation path is in / usr/local/perl and made a soft connection to / usr/bin/perl

Apr.30,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e4bf12-44e51.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e4bf12-44e51.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?