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Invent random_normal() to provide normally-distributed random numbers.

author Tom Lane <tgl@sss.pgh.pa.us>

Mon, 9 Jan 2023 17:44:00 +0000 (12:44 -0500)

committer Tom Lane <tgl@sss.pgh.pa.us>

Mon, 9 Jan 2023 17:44:00 +0000 (12:44 -0500)

commit 38d81760c4d7e22b95252e3545596602c9e38806

tree c5f8802619bf418dbdcc40392bb6d47123861908 tree

parent 2673ebf49acfd83b09c777ced8f21eacd27b51ce commit | diff

Invent random_normal() to provide normally-distributed random numbers.

There is already a version of this in contrib/tablefunc, but it
seems sufficiently widely useful to justify having it in core.

Paul Ramsey

Discussion: https://postgr.es/m/CACowWR0DqHAvOKUCNxTrASFkWsDLqKMd6WiXvVvaWg4pV1BMnQ@mail.gmail.com

doc/src/sgml/func.sgml diff | blob | blame | history

src/backend/catalog/system_functions.sql diff | blob | blame | history

src/backend/utils/adt/float.c diff | blob | blame | history

src/bin/pgbench/pgbench.c diff | blob | blame | history

src/common/pg_prng.c diff | blob | blame | history

src/include/catalog/catversion.h diff | blob | blame | history

src/include/catalog/pg_proc.dat diff | blob | blame | history

src/include/common/pg_prng.h diff | blob | blame | history

src/test/regress/expected/random.out diff | blob | blame | history

src/test/regress/sql/random.sql diff | blob | blame | history

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