如何删除坏触发

Question

在MySQL 5.0.77版本，我跑这

CREATE TRIGGER ins_trap_to_memory AFTER INSERT on Table1 
FOR EACH ROW 
INSERT INTO Table1_Copy SELECT NEW.*; 

它跑，但现在数据库断开每当我试图做某些事情：

不能查看triggers-

mysql> SHOW TRIGGERS LIKE '%'\G 
ERROR 2006 (HY000): MySQL server has gone away 
No connection. Trying to reconnect... 
Connection id: 7 
Current database: mydb 

ERROR 2013 (HY000): Lost connection to MySQL server during query 

无法删除问题TRIGGER-

mysql> DROP TRIGGER ins_trap_to_memory; 
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 3 

无法查询information_schema.TRIGGERS-

mysql> select * from information_schema.TRIGGERS; 
ERROR 2006 (HY000): MySQL server has gone away 
No connection. Trying to reconnect... 
Connection id: 12 
Current database: information_schema 

ERROR 2013 (HY000): Lost connection to MySQL server during query 

Answer 1

做其他类型的查询工作的？

除非Table1的插入量持续增加，否则两者是相关的，这似乎不太可能，并且这是服务器过载的结果。这可能只是一个间歇性的连接问题。

无论哪种方式，你应该能够砸：

DROP TRIGGER ins_trap_to_memory ON Table1 

Answer 2

之所以能够前往/var/lib/mysql/mydb和删除Table1.TRG摆脱坏触发的。