Re: How to retrieve Comment text using SQL, not psql?

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От Francisco Olarte
Тема Re: How to retrieve Comment text using SQL, not psql?
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Msg-id CA+bJJbzxxbWbaZG0UJz=jnSrigWCAM35+pSQTRpd1pBHC=ZNiw@mail.gmail.com
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Ответ на How to retrieve Comment text using SQL, not psql?  (Bob Futrelle <bob.futrelle@gmail.com>)
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Hi Bob:

On Sat, May 30, 2015 at 1:48 PM, Bob Futrelle <bob.futrelle@gmail.com> wrote:
> Using pgAdmin3 I've tried this and variations on it.   All are rejected.
> select COMMENT ON TABLE articlestats

pgAdmin3 is a bit complex for me, bot on vanilla psql you can use the switch:
>>>
-E
--echo-hidden

Echo the actual queries generated by \d and other backslash commands.
You can use this to study psql's internal operations. This is
equivalent to setting the variable ECHO_HIDDEN to on.
<<<
to learn how it does them, and elaborate from there, Its a nice
resource ( although I fear its queries evolve with versions, but you
can always port them touse the information_schema (
http://www.postgresql.org/docs/9.4/static/information-schema.html )
which should be a little more stable.

Francisco Olarte.


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