Re: Order of execution in shell echo to psql

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От John Gage
Тема Re: Order of execution in shell echo to psql
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Msg-id 1EAFF3C1-52FA-4B0E-8D90-165DBA47CFDB@numericable.fr
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Ответ на Re: Order of execution in shell echo to psql  (Tom Lane <tgl@sss.pgh.pa.us>)
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Thanks very much for elucidating this.  \g is going to help me in this
situation more than the ;

John


On May 2, 2010, at 4:25 PM, Tom Lane wrote:

> David W Noon <dwnoon@ntlworld.com> writes:
>> On Sun, 2 May 2010 14:13:52 +0200, John Gage wrote abour [GENERAL]
>>> I issue the following command to the shell:
>>>
>>> echo '\o file.txt \\ select * from table_name limit 10  \o ' |
>>> psql --
>>> host 'localhost' --port 5432 --username 'johngage' 'database_name'
>
>> Try putting a semi-colon at the end of your SQL query.
>
> Or put a \g there.  As it stands, execution of the SQL query is
> triggered by the EOF at the end of the string.  So the fact that the
> second \o got executed before that is unsurprising.
>
>             regards, tom lane
>
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