Document autoanalyze limitations for partitioned tables When dealing with partitioned tables, counters for partitioned tables are not updated when modifying child tables. This means autoanalyze may not update optimizer statistics for the parent relations, which can result in poor plans for some queries.
It's worth documenting this limitation, so that people are aware of it and can take steps to mitigate it (e.g. by setting up a script executing ANALYZE regularly). Backpatch to v10. Older branches are affected too, of couse, but we no longer maintain those. Author: Justin Pryzby Reviewed-by: Zhihong Yu, Tomas Vondra Backpatch-through: 10 Discussion: https://postgr.es/m/20210913035409.GA10647%40telsasoft.com Branch ------ REL_14_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/6b262f353ef710704a9388d32924b8c10c7e6eaa Modified Files -------------- doc/src/sgml/maintenance.sgml | 29 +++++++++++++++++++++++++++++ doc/src/sgml/ref/analyze.sgml | 32 +++++++++++++++++++++++++++++--- 2 files changed, 58 insertions(+), 3 deletions(-)