Re: DROP COLUMN Progress - Mailing list pgsql-hackers

From Christopher Kings-Lynne
Subject Re: DROP COLUMN Progress
Date
Msg-id GNELIHDDFBOCMGBFGEFOKEAJCDAA.chriskl@familyhealth.com.au
Whole thread Raw
In response to Re: DROP COLUMN Progress  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
> > test=# create table test (a int4, b int4, c int4, d int4);
> > CREATE TABLE
> > test=# insert into test values (1,2,3,4);
> > INSERT 16588 1
> > test=# alter table test drop b;
> > ALTER TABLE
> > test=# select * from test;
> >  a | d | d
> > ---+---+---
> >  1 | 3 | 4
> > (1 row)
> 
> What of
> 
>     SELECT a,c,d FROM test
> 
> I'll bet that doesn't work at all...

Yeah, broken.  Damn.

test=# SELECT a,c,d FROM test;a | c | d
---+---+---1 | 2 | 3
(1 row)

test=# SELECT a,d FROM test;a | d
---+---1 | 3
(1 row)

test=# SELECT d,c,a FROM test;d | c | a
---+---+---3 | 2 | 1
(1 row)

Chris





pgsql-hackers by date:

Previous
From: Tatsuo Ishii
Date:
Subject: Re: Proposal: CREATE CONVERSION
Next
From: Tatsuo Ishii
Date:
Subject: Re: Proposal: CREATE CONVERSION