Re: question on diagnostics - Mailing list pgsql-sql

From Alexander H. Iliev
Subject Re: question on diagnostics
Date
Msg-id 200006010507.BAA22920@nimbus.dartmouth.edu
Whole thread Raw
In response to Re: question on diagnostics  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: question on diagnostics  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: question on diagnostics  (Bruce Momjian <pgman@candle.pha.pa.us>)
Re: question on diagnostics  (Bruce Momjian <pgman@candle.pha.pa.us>)
List pgsql-sql
> > oh, btw this select refused to use an SQL natural join among the 3
> > relations - the server gives up and disconnects without warning.
> 
> That sounds like a garden-variety bug.  I'd be willing to look at it
> if I had a complete example to follow, but I don't want to try to
> reverse-engineer your table definitions...

a join with 3 tables never seems to work:

test=# create table a(a int);
CREATE
test=# create table b(a int);
CREATE
test=# create table c(a int);
CREATE
test=# insert into a values (1);
INSERT 23734 1
test=# insert into b values (1);
INSERT 23744 1
test=# insert into c values (1);
INSERT 23736 1
test=# select * 
test-# from a, b, c
test-# where a.a = b.a AND
test-#       b.a = c.a;a | a | a 
---+---+---1 | 1 | 1
(1 row)
test=# select * from a natural inner join b natural inner join c;
pqReadData() -- backend closed the channel unexpectedly.       This probably means the backend terminated abnormally
  before or while processing the request.
 
The connection to the server was lost. Attempting reset: Failed.


alex



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