On 5/12/18 17:25, Tom Lane wrote:
> Anyway, attached is a revised patch. I found a test case for
> expanded_record_set_fields(), too.
Thank you for fixing this up.
In reviewing the committed patch, I noticed that in ER_get_flat_size()
you have removed the PG_DETOAST_DATUM() call and let
expanded_record_set_field_internal() do the de-toasting work. I had
considered that too, but my impression is that the purpose of the
PG_DETOAST_DATUM() is to de-compress for the purpose of size
computation, whereas expanded_record_set_field_internal() only does the
inlining of externally stored values and doesn't do any explicit
decompression. Is this correct?
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services