From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
---|---|
To: | Jim Nasby <Jim(dot)Nasby(at)BlueTreble(dot)com> |
Cc: | Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: "SQL sentence"? |
Date: | 2017-02-18 04:19:23 |
Message-ID: | 20170218041923.ph5piq7vtg6xwvge@alvherre.pgsql |
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Lists: | pgsql-hackers |
Jim Nasby wrote:
> I'm confused by this:
>
> "pg_event_trigger_ddl_commands returns one row for each base command
> executed; some commands that are a single SQL sentence may return more than
> one row."
>
> What is a "SQL sentence"?
I meant "a single SQL command". The word "sentence" probably just
slipped through. Will fix.
> (FWIW, I'm wondering because I was just looking to see why there's no
> details for things like altering a column in a table.)
Do you mean you want to have access to the details of the alter table
operations being executed? There's no structured data for that; you
need to write a C function to examine the pg_ddl_command opaque column.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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