Обсуждение: Which trigger execute which function?

Previous DBA create a lot of triggers and functions without
documentation like:

CREATE TRIGGER trigger_name [BEFORE | AFTER] event ON table_name
FOR EACH ROW EXECUTE PROCEDURE function_name();

Now he is gone. I couldn't find his PL/PGSQL source codes!

I can do

SELECT * FROM pg_proc;
SELECT * FROM pg_trigger;

to list all the name of triggers and functions. But I don't know which
trigger
execute which function. How do I find out that?

Our USENET new server (NNTP) doesn't have comp.databases.postgresql.*
news groups. Therefore, please cc: a copy to me if you reply.
Thank Q very much in advance!

"Raymond Chui" <Raymond.Chui@noaa.gov> writes:
> Previous DBA create a lot of triggers and functions without
> documentation like: ...
> Now he is gone. I couldn't find his PL/PGSQL source codes!

"pg_dump -s" is your friend.

            regards, tom lane

On Wed, 27 Feb 2002, Raymond Chui wrote:

> Previous DBA create a lot of triggers and functions without
> documentation like:
>
> CREATE TRIGGER trigger_name [BEFORE | AFTER] event ON table_name
> FOR EACH ROW EXECUTE PROCEDURE function_name();
>
> Now he is gone. I couldn't find his PL/PGSQL source codes!
>
> I can do
>
> SELECT * FROM pg_proc;
> SELECT * FROM pg_trigger;

select * from pg_trigger,pg_proc where tgfoid=pg_proc.oid;

Raymond Chui wrote:
> Previous DBA create a lot of triggers and functions without
> documentation like:
>
> CREATE TRIGGER trigger_name [BEFORE | AFTER] event ON table_name
> FOR EACH ROW EXECUTE PROCEDURE function_name();
>
> Now he is gone. I couldn't find his PL/PGSQL source codes!
>
> I can do
>
> SELECT * FROM pg_proc;
> SELECT * FROM pg_trigger;
>
> to list all the name of triggers and functions. But I don't know which
> trigger
> execute which function. How do I find out that?
>
> Our USENET new server (NNTP) doesn't have comp.databases.postgresql.*
> news groups. Therefore, please cc: a copy to me if you reply.
> Thank Q very much in advance!
>

You could use "pg_dump -s > mydb.dmp" to dump the database schema. Then
open mydb.dmp in a text editor. I think this will show you all the
details you need.

HTH,

Joe