aggregation of setof

Hi all,

I would like to write a query, which aggregates the results of regexp_matches(). The problem is that regexp_matches returnes setof text[] as documented even if I discard the global flag (http://www.postgresql.org/docs/8.4/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP ). Thus resulting in an error when I try to aggregate the result:

“

SELECT array_accum(

regexp_matches('foobarbequebazilbarfbonk', '(b[^b]+)(b[^b]+)')

)

-------------------------------

ERROR:  set-valued function called in context that cannot accept a set

********** Fehler **********

ERROR: set-valued function called in context that cannot accept a set

SQL Status:0A000

“

Can I convert a ‚setof text[]‘ to a ‚text[]‘?

Alternatively I could use a sub-select, but I am curious if there are other solutions around.

Regards,

Andreas

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