如何刪除壞觸發

Question

在MySQL 5.0.77版本，我跑這

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

它跑，但現在數據庫斷開每當我試圖做某些事情：

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 

無法刪除問題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 

無法查詢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

做其他類型的查詢工作的？

除非Table1的插入量持續增加，否則兩者是相關的，這似乎不太可能，並且這是服務器過載的結果。這可能只是一個間歇性的連接問題。

無論哪種方式，你應該能夠砸：

DROP TRIGGER ins_trap_to_memory ON Table1 

Answer 2

之所以能夠前往/var/lib/mysql/mydb和刪除Table1.TRG擺脫壞觸發的。