On 03/29/2018 05:49 AM, David Rowley wrote: > On 29 March 2018 at 03:05, Tomas Vondra <tomas.von...@2ndquadrant.com> wrote: >> On 03/28/2018 03:54 PM, Tom Lane wrote: >>> I had in mind to look at exprType() of the argument. >> >> Right, I'm fine with that. > > Attached is v9, which is based on Tom's v8 but includes the new tests > and I think the required fix to disable use of the serial/deserial > function for array_agg(). >
I have only looked at the diff, but it seems fine to me (in the sense that it's doing the right checks to disable parallelism only when really needed). FWIW I wonder if we might simply fallback to input/output functions when the send/receive functions are not available. Not sure it's worth it. regards -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
