Re: weired behavior... after pg_resetxlog-> dump->initdb-->reload.

Dear Tom,

Sorry i could not replicate that issue . But
here is something which was the original problem
and is replicable.

Regds
Mallah.

rt2=# CREATE UNIQUE INDEX users_1 on users_sample(name);
ERROR: could not create unique index
DETAIL: Table contains duplicated values.
rt2=#
rt2=# SELECT name from users_sample group by name having count(*) > 1
limit 20;
+------+
| name |
+------+
+------+
(0 rows)

Time: 766.725 ms
rt2=# SELECT version();
rt2=# SELECT name from users_sample group by name having count(*) > 1 ;
+------+
| name |
+------+
+------+
(0 rows)

Time: 905.586 ms
rt2=# SELECT version();
+----------------------------------------------------------------------------------------------------------+
|
version |
+----------------------------------------------------------------------------------------------------------+
| PostgreSQL 7.4.3 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2.3
20030502 (Red Hat Linux 3.2.3-34) |
+----------------------------------------------------------------------------------------------------------+
(1 row)

Time: 338.191 ms

Tom Lane wrote:

>Rajesh Kumar Mallah <mallah(at)trade-india(dot)com> writes:
>
>
>>rt2=# SELECT name from users group by name having count(*) > 1 limit 20;
>>(4 rows)
>>rt2=# SELECT name from users group by name having count(*) > 1 ;
>>(0 rows)
>>
>>
>
>Weird. What PG version is this? What does EXPLAIN show for each of
>these queries (maybe EXPLAIN ANALYZE too)? Can you provide a
>self-contained test case?
>
> regards, tom lane
>
>
>