>> How to create trigger only when it does not exist ?
> DROP TRIGGER IF EXISTS...
>
> See:
>
> http://www.postgresql.org/docs/8.2/static/sql-droptrigger.html
Thank you.
This doc says that dropping trigger drops depending objects also.
Which objects depend on the user-defined trigger so that they are also
dropped ?
Andrus.
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TIP 9: In versions below 8.0, the planner will ignore your desire to
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