Re: Differentiate between system commands and user commands

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: radha(dot)manohar(at)ndsu(dot)nodak(dot)edu
Cc: pgsql-novice(at)postgresql(dot)org
Subject: Re: Differentiate between system commands and user commands
Date: 2003-07-08 23:25:32
Message-ID: 27046.1057706732@sss.pgh.pa.us
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<radha(dot)manohar(at)ndsu(dot)nodak(dot)edu> writes:
> I would like to know how postgresql differentiates between the SQL
> commands that are
> entered by the user and the SQL commands that are executed internally by
> the system
> (for eg, to check the permissions of the user etc)?

There are no such "internal SQL commands". Permissions checking is
hard-coded in C in the backend.

regards, tom lane

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