Add show_data option to pg_get_wal_block_info. Allow users to opt out of returning FPI data and block data from pg_get_wal_block_info as an optimization. Testing has shown that this can make function execution over twice as fast in some cases.
When pg_get_wal_block_info is called with "show_data := false", it always returns NULL values for its block_data and block_fpi_data bytea output parameters. Nothing else changes. In particular, the function will still return the usual per-block summary of block data/FPI space overhead. Use of "show_data := false" is therefore feasible with all queries that don't specifically require these raw binary strings. Follow-up to recent work in commit 122376f0. There still hasn't been a stable release with the pg_get_wal_block_info function, so no bump in the pg_walinspect extension version. Per suggestion from Melanie Plageman. Author: Peter Geoghegan <p...@bowt.ie> Discussion: https://postgr.es/m/caakru_bjvbcybrj2cn6g2xv7b7-ja+pjto1nenehrr8oxyi...@mail.gmail.com Discussion: https://postgr.es/m/cah2-wzm9shokedm10_+qozkrsqhkvxwbfiehh6ehwqqrd_r...@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/df4f3ab51730a4cdddfead0b264d394ee4925723 Modified Files -------------- contrib/pg_walinspect/expected/oldextversions.out | 8 ++++---- contrib/pg_walinspect/expected/pg_walinspect.out | 10 +++++----- contrib/pg_walinspect/pg_walinspect--1.0--1.1.sql | 5 +++-- contrib/pg_walinspect/pg_walinspect.c | 13 ++++++++----- contrib/pg_walinspect/sql/pg_walinspect.sql | 10 +++++----- doc/src/sgml/pgwalinspect.sgml | 17 ++++++++++++++--- 6 files changed, 39 insertions(+), 24 deletions(-)