Re: Delimited identifier brhavior

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Tatsuo Ishii <ishii(at)postgresql(dot)org>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Delimited identifier brhavior
Date: 2010-11-12 00:08:03
Message-ID: 4CDC8563.1030603@dunslane.net
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On 11/11/2010 06:03 PM, Tatsuo Ishii wrote:
> Hi,
>
> I' wondering if following delimited identifier brhavior is correct or
> not:
>
> test=# create table t1(i int);
> create table t1(i int);
> CREATE TABLE
> test=# create table t1_foo(i int, j int);
> create table t1_foo(i int, j int);
> CREATE TABLE
> test=# select * from t1;
> select * from t1;
> i
> ---
> (0 rows)
>
> test=# select * from t1_foo;
> select * from t1_foo;
> i | j
> ---+---
> (0 rows)
>
> test=# select * from "t1"_foo;
> select * from "t1"_foo;
> i
> ---
> (0 rows)
>
> It seems PostgreSQL thinks "t1"_foo is equivalent to t1. Is this an
> expected behavior?

It's treating _foo as an alias in the query for t1. So the behaviour is
quite correct, I think.

cheers

andrew

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