Thank you,
Choon Park
On Fri, Mar 2, 2012 at 12:19 PM, Bosco Rama <postgres@xxxxxxxxxxxxx> wrote:
ChoonSoo Park wrote:You could try:
> Each function returns key/value pairs from hstore type.
> Is there any opposite function that returns hstore type from key/value rows?
>
> I know hstore (text[], text[]) can construct it. Is there any other choice?
>
> I have a table with ID & Description columns and want to return hstore type
> (ID1=>Desc1,ID2=>Desc2,....) that matches a query condition.
>>From top of my head, this is the only query I can think of
>
> SELECT hstore ((SELECT array(SELECT CAST(ID as TEXT) FROM T1 WHERE ....)),
> (SELECT array(SELECT Description FROM T1 WHERE ...)))
>
> But I don't want to run the same where condition twice.
select hstore(array_agg(CAST(ID as TEXT)), array_agg(Description)) from T1 where ...
I don't have hstore loaded but that seems like it should work.
HTH
Bosco.
