[SQL] Alias-Error

[Jost Richstein]

Hi,

I am running a query with alias (a self join) against
version 7.3.4 on Suse Linux 7.3 and on FreeBSD (v5?).
It runs fine on Linux, but produces an error on
FreeBSD: "unknown alias C2". And btw: the query runs
on every other DB I have tried...

The Query is something like this:

SELECT DISTINCT C2.cmc_mchap, C2.cmc_sort
FROM sis_cmca, sis_cmca C2
WHERE cm_status != 'U' AND sis_cmca.cmc_name='INTERN2000' AND
  C2.cmc_name='INTERN2000' AND sis_cmca.cmc_mchap=C2.cmc_mchap
  

What causes this error? Workarounds?

Jost


---(end of broadcast)---
TIP 9: the planner will ignore your desire to choose an index scan if your
  joining column's datatypes do not match

Re: [SQL] [GENERAL] Alias-Error

[Jost Richstein]

Ok. The exact error message is as follows:

SQLException Time  : Mon Oct 20 13:15:25 CEST 2003
SQLException ErrorCode : 0
SQLException SQLState  : null
SQLException Message   : ERROR:  Relation "c2" does not exist
SQLException Connection: 4878867

The query is something like this:

SELECT DISTINCT C2.cmc_mchap, C2.cmc_sort
FROM sis_cmca, sis_cmca C2
WHERE cm_status != 'U' AND sis_cmca.cmc_name='INTERN2000' AND
  C2.cmc_name='INTERN2000' AND sis_cmca.cmc_mchap=C2.cmc_mchap

Tom Lane wrote:
> 
> Jost Richstein <[EMAIL PROTECTED]> writes:
> > I am running a query with alias (a self join) against
> > version 7.3.4 on Suse Linux 7.3 and on FreeBSD (v5?).
> > It runs fine on Linux, but produces an error on
> > FreeBSD: "unknown alias C2".
> 
> The string "unknown alias" appears nowhere in the 7.3 sources.
> Are you sure you are talking to a Postgres database?
> 
> regards, tom lane


---(end of broadcast)---
TIP 9: the planner will ignore your desire to choose an index scan if your
  joining column's datatypes do not match