2008/9/16 Greg Stark <[EMAIL PROTECTED]>:
> On Tue, Sep 16, 2008 at 3:02 PM, Tom Lane <[EMAIL PROTECTED]> wrote:
>> "Pavel Stehule" <[EMAIL PROTECTED]> writes:
>>> select a, b from t group by grouping sets(a, b);
>>
>>> is same as:
>>
>>> select a, NULL from t group by a
>>> union all
>>> select NU
On Tue, Sep 16, 2008 at 3:02 PM, Tom Lane <[EMAIL PROTECTED]> wrote:
> "Pavel Stehule" <[EMAIL PROTECTED]> writes:
>> select a, b from t group by grouping sets(a, b);
>
>> is same as:
>
>> select a, NULL from t group by a
>> union all
>> select NULL, b from t group by b;
>
> Really? That seems utt
2008/9/16 Tom Lane <[EMAIL PROTECTED]>:
> "Pavel Stehule" <[EMAIL PROTECTED]> writes:
>> select a, b from t group by grouping sets(a, b);
>
>> is same as:
>
>> select a, NULL from t group by a
>> union all
>> select NULL, b from t group by b;
>
> Really? That seems utterly bizarre, not to say poin
"Pavel Stehule" <[EMAIL PROTECTED]> writes:
> select a, b from t group by grouping sets(a, b);
> is same as:
> select a, NULL from t group by a
> union all
> select NULL, b from t group by b;
Really? That seems utterly bizarre, not to say pointless.
You sure you read the spec correctly?
Hello,
== Proposal - GROUPING SETS ==
a grouping set feature allows multiple grouping clauses in one
query. Result of grouping sets is union of results each groupby
clause's result.
create table t(a int, b int);
insert into t values(10,20);
insert into t values(30,40);
select a, b from t group
