Обсуждение: RI_ConstraintTrigger_11264756

All,

I have inherited a table (below) with a RI trigger.
I believe this table was created where both clone_id & blastx_id are FKs
w/ stipulation 'ON DELETE CASCADE'.

My question is, is this specified in the trigger:
RI_ConstraintTrigger_11264756?

If so how would I learn the content of the trigger knowing just the
trigger id (11264756)?

I have not seen a 'decoding' of triggers using pgsql.

regards,

Charles


CREATE TABLE clone_blastx(clone_id INTEGER NOT NULL REFERENCES clone(clone_id)  ON DELETE CASCADE,blastx_id INTEGER NOT
NULLREFERENCES blastx(blastx_id)  ON DELETE CASCADE,UNIQUE(clone_id,blastx_id));
 



 Column   |  Type   | Modifiers 
-----------+---------+-----------clone_id  | integer | contig_id | integer | 
Indexes: clone_contig_clone_id_key unique btree (clone_id, contig_id),        clone_id_clone_contig_key btree
(clone_id),       contig_id_clone_contig_key btree (contig_id)
 
Triggers: RI_ConstraintTrigger_11264756

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On Thursday 31 July 2003 12:18, Charles Hauser wrote:
> All,
>
> I have inherited a table (below) with a RI trigger.
> I believe this table was created where both clone_id & blastx_id are FKs
> w/ stipulation 'ON DELETE CASCADE'.
>
> My question is, is this specified in the trigger:
> RI_ConstraintTrigger_11264756?
>
> If so how would I learn the content of the trigger knowing just the
> trigger id (11264756)?
>
> I have not seen a 'decoding' of triggers using pgsql.
>

Look at the pg_trigger table. There is some documentation on what the various
fields mean.

Normally, I see these triggers when I have declared a table to have a foreign
key, or I created a table that has a foreign key that references this table.

I can usually decode who is referencing what from the tgargs column.

Example:
<unnamed>\000order_materials\000order_shipping\000UNSPECIFIED\000order_ship_id\000order_ship_id\000

Translates to:
order_materials.order_ship_id references order_shipping.order_ship_id

I have found a ton of these as I have upgraded from 7.2 to 7.3. I have dropped
most of the triggers and altered the table to have the foreign keys to remedy
this.


- --
Jonathan Gardner <jgardner@jonathangardner.net>
Live Free, Use Linux!
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