Re: join with an array

In response to Louis-David Mitterrand :
> Hi,
> 
> I'm trying the following query:
> 
>     select array_agg(t1.id) from table1 t1 join table2 t2 on (t2.id = any(array_agg)) group by t1.col1;
> 
> but I get this error: ERROR:  column "array_agg" does not exist
> 
> I tried aliasing array_agg(t1.id) without success.
> 
> Thanks for any suggestions,

I can't really understand what you want to achieve, but maybe this is
what you are looking for:

test=*# select * from a;id | v
----+--- 1 | 1 2 | 1 3 | 1 4 | 1 5 | 2 6 | 2
(6 rows)

test=*# select * from b;id
---- 1 3
(2 rows)

test=*# select array_agg(a.id), v from a join b on (b.id in (select a.id from a)) group by a.v;    array_agg     | v
-------------------+---{1,2,3,4,1,2,3,4} | 1{6,5,5,6}         | 2
(2 rows)



Question: you are 'pif' in the irc-channel?


Regards, Andreas
-- 
Andreas Kretschmer
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