Tom Lane wrote:
> Jose Soares <jose@sferacarta.com> writes:
> > SELECT...HAVING, this last for example doesn't work.
>
> That's a rather strong statement, and in fact a provably false one.
> How about a detailed bug report rather than "it doesn't work"?
>
> > SELECT ... UNION (is 3 / 4 times slow)
>
> Can't help you on that without more details, either. What is the
> query exactly, what plan does EXPLAIN show, and what plan did you
> get from 6.5?
>
> regards, tom lane
--
Jose' Soares
Bologna, Italy Jose@sferacarta.com
============================================================================ POSTGRESQL BUG
REPORTTEMPLATE
============================================================================
Your name : Jose' Soares
Your email address : Jose@SferaCarta.com
System Configuration
--------------------- Architecture (example: Intel Pentium) : Intel Pentium
Operating System (example: Linux 2.0.26 ELF) : Linux 2.0.37 Elf
PostgreSQL version (example: PostgreSQL-6.1) : PostgreSQL-v7.0
Compiler used (example: gcc 2.7.2) : gcc 2.7.2.3
Please enter a FULL description of your problem:
------------------------------------------------
Seems that I found a bug on HAVING clause
Please describe a way to repeat the problem. Please try to provide a
concise reproducible example, if at all possible:
----------------------------------------------------------------------
I created a table like this one below:
CREATE TABLE comuni (istat CHAR(06) PRIMARY KEY NOT NULL,nome CHAR(50) NOT NULL,provincia
CHAR(02),codice_fiscale CHAR(04),cap CHAR(05),regione CHAR(03),distretto
CHAR(04));
CREATE INDEX nome_comune_idx ON comuni (nome);
I tried the following query :
select * from comuni where nome in ( select nome from comuni group by nome having 1 < count(nome) );
on the above table populated with 8342 rows, PostgreSQL begins searching
and I wait for hours without any result.
If you know how this problem might be fixed, list the solution below:
---------------------------------------------------------------------
I don't know, but I can send you my table data if you want it.
