From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
Cc: | Howie <caffeine(at)toodarkpark(dot)org>, pgsql-sql(at)hub(dot)org |
Subject: | Re: [SQL] table aliasing problem with 6.5... |
Date: | 1999-09-27 22:45:35 |
Message-ID: | 27649.938472335@sss.pgh.pa.us |
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Lists: | pgsql-sql |
Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> writes:
> OK, I have added an elog(NOTICE) for this behavior:
> test=> select * from pg_language;
> lanname |lanispl|lanpltrusted|lanplcallfoid|lancompiler
> --------+-------+------------+-------------+--------------
> internal|f |f | 0|n/a
> lisp |f |f | 0|/usr/ucb/liszt
> C |f |f | 0|/bin/cc
> sql |f |f | 0|postgres
> (4 rows)
> test=> select pg_language.*;
--> NOTICE: Auto-creating query reference to table pg_language
> lanname |lanispl|lanpltrusted|lanplcallfoid|lancompiler
> --------+-------+------------+-------------+--------------
> internal|f |f | 0|n/a
> lisp |f |f | 0|/usr/ucb/liszt
> C |f |f | 0|/bin/cc
> sql |f |f | 0|postgres
> (4 rows)
> I am interested in comments about my wording, and this behavour.
I think this is a fine idea, but that wording might not be much help
to novices. Maybe "Adding missing FROM-clause entry for pg_language",
or some such?
In a situation where you've got subselects, it may not be immediately
obvious which FROM list the entry got added to. I can't think of any
simple way of identifying that, however :-(
regards, tom lane
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