Mysql trigger

Hello, gods

id  A B C D w

w A B C D 
Mar.16,2021

--testtable

delimiter //
create trigger insertTrigger before insert on testtable
for each row set new.w = new.a + new.b + new.c + new.d;
//

create trigger updateTrigger before update on testtable
for each row set new.w = new.a + new.b + new.c + new.d;
//

delimiter ;
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-64f5-1e46b47-44bd5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e46b47-44bd5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?