2010/2/1 Thom Brown <thombr...@gmail.com>: > I noticed that the regression test results don't include the following case: > > select string_agg(a) from (values(null),(null)) g(a); > > There is one similar where a delimiter is provided. > > Which leads me to ask for clarification, would it be safe to assume that > string_agg can never itself return null?
if all values are null, then result is null. Pavel > > Thom > > -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
