Обсуждение: Notice about psql !
HI guys
when edit some sql in psql's \e feature then quit edit
it is performed !!!!
it's dangerous isn't it ?
if i edit drop database datname; then .....
any friends have confuse?
Nice day!
doom.zhou
On 12/16/2013 09:29 PM, Doom.zhou wrote: > HI guys > when edit some sql in psql's \e feature then quit edit > it is performed !!!! > > > it's dangerous isn't it ? > It is *extremely* dangerous. But neither more nor less dangerous than any interface that allows you to submit SQL directly to the server. The \e command merely offers an alternative to the command-line editing to craft your SQL statements and is very convenient when you are editing a long statement. When done, you exit and the command is submitted just as it is submitted when you press <Enter> at the command-line. If you change your mind while in the editor, just clear the text in the editor and exit. Nothing will be run. Cheers, Steve
Steve Crawford wrote > On 12/16/2013 09:29 PM, Doom.zhou wrote: >> HI guys >> when edit some sql in psql's \e feature then quit edit >> it is performed !!!! >> >> >> it's dangerous isn't it ? >> > It is *extremely* dangerous. But neither more nor less dangerous than > any interface that allows you to submit SQL directly to the server. > > The \e command merely offers an alternative to the command-line editing > to craft your SQL statements and is very convenient when you are editing > a long statement. When done, you exit and the command is submitted just > as it is submitted when you press > <Enter> > at the command-line. > > If you change your mind while in the editor, just clear the text in the > editor and exit. Nothing will be run. Or BEGIN; <Enter> \e <Enter> COMMIT | ROLLBACK ; <Enter> David J. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Notice-about-psql-tp5783659p5783726.html Sent from the PostgreSQL - admin mailing list archive at Nabble.com.
Really thanks
On Tue, Dec 17, 2013 at 11:04 PM, David Johnston <polobo@yahoo.com> wrote:
Steve Crawford wroteOr> On 12/16/2013 09:29 PM, Doom.zhou wrote:
>> HI guys
>> when edit some sql in psql's \e feature then quit edit
>> it is performed !!!!
>>
>>
>> it's dangerous isn't it ?
>>
> It is *extremely* dangerous. But neither more nor less dangerous than
> any interface that allows you to submit SQL directly to the server.
>
> The \e command merely offers an alternative to the command-line editing
> to craft your SQL statements and is very convenient when you are editing
> a long statement. When done, you exit and the command is submitted just
> as it is submitted when you press
> <Enter>
> at the command-line.
>
> If you change your mind while in the editor, just clear the text in the
> editor and exit. Nothing will be run.
BEGIN; <Enter>
\e <Enter>
COMMIT | ROLLBACK ; <Enter>
David J.
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On Wed, Dec 18, 2013 at 10:35:33AM +0800, Doom.zhou wrote: > Really thanks > > > On Tue, Dec 17, 2013 at 11:04 PM, David Johnston <polobo@yahoo.com> wrote: > > Steve Crawford wrote > > On 12/16/2013 09:29 PM, Doom.zhou wrote: > >> HI guys > >> when edit some sql in psql's \e feature then quit edit > >> it is performed !!!! > >> > >> > >> it's dangerous isn't it ? > >> > > It is *extremely* dangerous. But neither more nor less dangerous than > > any interface that allows you to submit SQL directly to the server. > > > > The \e command merely offers an alternative to the command-line editing > > to craft your SQL statements and is very convenient when you are editing > > a long statement. When done, you exit and the command is submitted just > > as it is submitted when you press > > <Enter> > > at the command-line. > > > > If you change your mind while in the editor, just clear the text in the > > editor and exit. Nothing will be run. > > Or > > BEGIN; <Enter> > > \e <Enter> > > COMMIT | ROLLBACK ; <Enter> Actually, just remove the semicolon from the query and it will not run when you exit \e. -- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + Everyone has their own god. +