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From: Thomas Lockhart <lockhart@alumni.caltech.edu>
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Subject: Re: signals in ODBC?
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> Huh?  First of all, the documentation says that NOTIFY does take an
> argument.  Secondly, I tried it in two psql's and it appears to work.  I
> now understand what the other talk was about, LISTEN is only checked once
> after each query (correct?).

I was not clear on my nonsequiteur: Commercial Ingres allows you to post
a *message* with the notifying event, rather than just the event itself.
But it is not relevant to the current PostgreSQL implementation, so why
did I add to the confusion? I don't know ;)

                      - Thomas