postgresql/doc/src
Tom Lane f5024d8d7b Re-order pg_attribute columns to eliminate some padding space.
Now that attcompression is just a char, there's a lot of wasted
padding space after it.  Move it into the group of char-wide
columns to save a net of 4 bytes per pg_attribute entry.  While
we're at it, swap the order of attstorage and attalign to make for
a more logical grouping of these columns.

Also re-order actions in related code to match the new field ordering.

This patch also fixes one outright bug: equalTupleDescs() failed to
compare attcompression.  That could, for example, cause relcache
reload to fail to adopt a new value following a change.

Michael Paquier and Tom Lane, per a gripe from Andres Freund.

Discussion: https://postgr.es/m/20210517204803.iyk5wwvwgtjcmc5w@alap3.anarazel.de
2021-05-23 12:12:09 -04:00
..
sgml Re-order pg_attribute columns to eliminate some padding space. 2021-05-23 12:12:09 -04:00
Makefile Remove maintainer-check target, fold into normal build 2013-10-10 20:11:56 -04:00