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Reimplement NUMERIC datatype using base-10000 arithmetic; also improve

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some of the algorithms for higher functions.  I see about a factor of ten
speedup on the 'numeric' regression test, but it's unlikely that that test
is representative of real-world applications.
initdb forced due to change of on-disk representation for NUMERIC.
This commit is contained in:
Tom Lane
2003-03-21 01:58:05 +00:00
parent 5ae424529b
commit d72f6c7503
6 changed files with 1590 additions and 960 deletions
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doc/src/sgml/release.sgml
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@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.185 2003/02/05 17:41:32 tgl Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.186 2003/03/21 01:58:04 tgl Exp $
-->
<appendix id="release">
@ -24,6 +24,7 @@ CDATA means the content is "SGML-free", so you can write without
worries about funny characters.
-->
<literallayout><![CDATA[
Reimplementation of NUMERIC datatype for more speed
New regular expression package, many more regexp features (most of Perl5)
Can now do EXPLAIN ... EXECUTE to see plan used for a prepared query
Explicit JOINs no longer constrain query plan, unless JOIN_COLLAPSE_LIMIT = 1