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Re: Postgresql 9.5 and Shell scripts/variables vs. C programming/defining a value to be used - Mailing list pgsql-general

From Tom Lane
Subject Re: Postgresql 9.5 and Shell scripts/variables vs. C programming/defining a value to be used
Date
Msg-id 28320.1479915854@sss.pgh.pa.us
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In response to Re: Postgresql 9.5 and Shell scripts/variables vs. C programming/defining a value to be used  ("David G. Johnston" <david.g.johnston@gmail.com>)
Responses Re: Postgresql 9.5 and Shell scripts/variables vs. C programming/defining a value to be used  (Poul Kristensen <bcc5226@gmail.com>)
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"David G. Johnston" <david.g.johnston@gmail.com> writes:
> On Wed, Nov 23, 2016 at 3:46 AM, Poul Kristensen <bcc5226@gmail.com> wrote:
>> In the postgresql.log I get "select datname from $1".

> ​That is expected when you parameterize a query - the query string includes
> parameter​s instead of values.

It looks like Poul is hoping to use a parameter as a table name,
which doesn't work.  Parameters can only represent values (constants).

            regards, tom lane

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