Robert Haas 5fe5a2cee9 Allow aggregate transition states to be serialized and deserialized. ...

This is necessary infrastructure for supporting parallel aggregation
for aggregates whose transition type is "internal".  Such values
can't be passed between cooperating processes, because they are
just pointers.

David Rowley, reviewed by Tomas Vondra and by me.

2016-03-29 15:04:05 -04:00

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