On 04.09.2017 23:52, Andres Freund wrote:
Yea, I've changed that already, although it's currently added earlier,
because the alignment is needed before, to access the column correctly.
I've also made number of efficiency improvements, primarily to access
columns with an absolute offset if all preceding ones are fixed width
not null columns - that is quite noticeable performancewise.
Unfortunately, in most of real table columns are nullable.
I wonder if we can perform some optimization in this case (assuming that
in typical cases column either contains mostly non-null values, either
mostly null values).
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Konstantin Knizhnik
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
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