Re: Error with DISTINCT

Hi,

try this:
testdb=#SELECT DISTINCT table_2.f1, table_1.f2, date('2000-08-22') AS
testdb-#date FROM table_1, table_2 WHERE table_1.f1 = table_2.f1;

Jerome Raupach wrote:

> testdb=#SELECT DISTINCT table_2.f1, table_1.f2, '2000-08-22' AS
> testdb-#date FROM table_1, table_2 WHERE table_1.f1 = table_2.f1;
> ERROR:  Unable to identify an ordering operator '<' for type 'unknown'
>         Use an explicit ordering operator or modify the query
>
> I must execute this query :
>
> testdb=#SELECT table_2.f1, table_1.f2, '2000-08-22' AS date FROM
> testdb-#table_1, table_2 WHERE table_1.f1 = table_2.f1 GROUP BY
> testdb-#table_2.f1, table_1.f2;
>
> Is it a bug ?
> Thanks in advance.
>
> Jerome.

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Jie LIANG

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