Wow!! Good memory. 
I didn't get anything with the 'select * from pg_trigger where tgname = 
'bug_assigned_to_fk';' but
I got something here :
 select * from pg_trigger where tgconstrname = 'bug_assigned_to_fk';
 tgrelid |            tgname            | tgfoid | tgtype | tgenabled | 
tgisconstr                  aint |    tgconstrname    | tgconstrrelid | 
tgdeferrable | tginitdeferred | tgnarg                  s | tgattr |            
                      tgargs                                                
---------+------------------------------+--------+--------+-----------+-----------
                  
-----+--------------------+---------------+--------------+----------------+-------
                  
--+--------+----------------------------------------------------------------------
                  ----
 7335118 | RI_ConstraintTrigger_9217018 |   1655 |     17 | t         | t       
                         | bug_assigned_to_fk |       7329978 | f            | 
f              |                         6 |        | 
bug_assigned_to_fk\000bug\000users\000FULL\000assigned_to\000user_id\           
       000
 7335118 | RI_ConstraintTrigger_9217016 |   1654 |      9 | t         | t       
                         | bug_assigned_to_fk |       7329978 | f            | 
f              |                         6 |        | 
bug_assigned_to_fk\000bug\000users\000FULL\000assigned_to\000user_id\           
       000
 7329978 | RI_ConstraintTrigger_9217014 |   1644 |     21 | t         | t       
                         | bug_assigned_to_fk |       7335118 | f            | 
f              |                         6 |        | 
bug_assigned_to_fk\000bug\000users\000FULL\000assigned_to\000user_id\           
       000
(3 rows)

What do I do with them?
------------------------------------------------
Mary Y Wang

-----Original Message-----
From: Tom Lane [mailto:t...@sss.pgh.pa.us] 
Sent: Wednesday, February 10, 2010 8:02 PM
To: Wang, Mary Y
Cc: pgsql-general@postgresql.org
Subject: Re: [GENERAL] How do I drop a Complicated Constraint Trigger After 
Delete Execute Procedure? 

"Wang, Mary Y" <mary.y.w...@boeing.com> writes:
> Ok.  I typed the correct name this time, and got the same error.
> "drop trigger bug_assigned_to_fk on users;
> ERROR:  DropTrigger: there is no trigger bug_assigned_to_fk on relation users 
> "
> "drop trigger bug_assigned_to_fk on bug;
> ERROR:  DropTrigger: there is no trigger bug_assigned_to_fk on relation bug"

Huh.  Do you get anything from
        select * from pg_trigger where tgname = 'bug_assigned_to_fk'; or
        select * from pg_trigger where tgconstrname = 'bug_assigned_to_fk'; ?  
If I recall the 7.1 code at all, it has to be printing one or the other of 
those fields as the name shown in the FK error message ...

                        regards, tom lane

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