Re: RfD: more powerful "any" types

From: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
To: decibel <decibel(at)decibel(dot)org>
Cc: Andrew Dunstan <andrew(at)dunslane(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Peter Eisentraut <peter_e(at)gmx(dot)net>, "David E(dot) Wheeler" <david(at)kineticode(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: RfD: more powerful "any" types
Date: 2009-09-14 05:13:11
Message-ID: 162867790909132213k64d876b6x318bc96b971b2825@mail.gmail.com
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2009/9/13 decibel <decibel(at)decibel(dot)org>:
> On Sep 12, 2009, at 5:54 PM, Andrew Dunstan wrote:
>>
>> decibel wrote:
>>>
>>> Speaking of concatenation...
>>>
>>> Something I find sorely missing in plpgsql is the ability to put
>>> variables inside of a string, ie:
>>>
>>> DECLARE
>>> v_table text := ...
>>> v_sql text;
>>> BEGIN
>>> v_sql := "SELECT * FROM $v_table";
>>>
>>> Of course, I'm assuming that if it was easy to do that it would be done
>>> already... but I thought I'd just throw it out there.
>>>
>>
>> Then use a language that supports variable interpolation in strings, like
>> plperl, plpythonu, plruby .... instead of plpgsql.
>
>
> Which makes executing SQL much, much harder.
>
> At least if we get sprintf dealing with strings might become a bit easier...

This feature is nice - but very dangerous - it the most easy way how
do vulnerable (on SQL injection) application!

regards
Pavel Stehule

> --
> Decibel!, aka Jim C. Nasby, Database Architect  decibel(at)decibel(dot)org
> Give your computer some brain candy! www.distributed.net Team #1828
>
>
>

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