Add SETTINGS option to EXPLAIN, to print modified settings. Query planning is affected by a number of configuration options, and it may be crucial to know which of those options were set to non-default values. With this patch you can say EXPLAIN (SETTINGS ON) to include that information in the query plan. Only options affecting planning, with values different from the built-in default are printed.
This patch also adds auto_explain.log_settings option, providing the same capability in auto_explain module. Author: Tomas Vondra Reviewed-by: Rafia Sabih, John Naylor Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/ea569d64ac7174d3fe657e3e682d11053ecf1866 Modified Files -------------- contrib/auto_explain/auto_explain.c | 13 ++ doc/src/sgml/auto-explain.sgml | 18 +++ doc/src/sgml/ref/explain.sgml | 12 ++ src/backend/commands/explain.c | 76 +++++++++++ src/backend/utils/misc/guc.c | 262 +++++++++++++++++++++++++++++------- src/include/commands/explain.h | 1 + src/include/utils/guc.h | 2 + src/include/utils/guc_tables.h | 1 + 8 files changed, 333 insertions(+), 52 deletions(-)
