Re: dynamic crosstab

Erik Jones wrote:
> First, please stop top-posting. It makes it difficult for both me
> and others to know to whom/what you are replying.

Sorry, I don't know much about mailing list customs - I had to look up what top-posting is. I will behave now ...

I would prefer to keep the complications for when I retrieve the data rather then when I store it.

I could imagine something like this though to create a crosstab as an array, but I am afraid that there is no assurance that the resulting array would contain the values in the same order for each focus:

tbl(eID, aID, value)

Select eID, array_accum(value) from
(
(Select Distinct eID from tbl) e
CROSS JOIN
(Select Distinct aID from tbl) a
) ea
LEFT OUTER JOIN
tbl USING (eID, aID)
GROUP BY eID

B.