Manual Trigger Creation

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От Josh Berkus
Тема Manual Trigger Creation
Дата
Msg-id web-26833@davinci.ethosmedia.com
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Ответы Re: Manual Trigger Creation  (Stephan Szabo <sszabo@megazone23.bigpanda.com>)
Re: Manual Trigger Creation  (Tom Lane <tgl@sss.pgh.pa.us>)
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Tom, Stephan. List folks:
I'm having a great deal of trouble with the automated constraint
triggers as implemented in 7.1 beta 3. I find that if I establish a
foriegn key through the CREATE TABLE statement, things start to blow up
if I modify any of the tables involved, and there's no easy way to drop
and re-create the foriegn key.  (PostgreSQL isn't alone in this ... MS
SQL Server is a headache if you want to tinker with the relational
structure).
 As such, I'd like to manually create my own foriegn key triggers
instead, once I'm done tinkering with the DB structure.  Can anyone
provide me with an example of this?  I figure I'll need 5 triggers for
each key:

1. ON UPDATE trigger on Reference List
2. ON DELETE trigger on Reference List
3. ON UPDATE trigger on data table
4. ON DELETE trigger on data table
5. ON INSERT trigger on data table
Am I on the right track?

-Josh



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