From a9757078ede132a93a746eece0b0b605b19fb8af Mon Sep 17 00:00:00 2001 From: Robert Haas Date: Mon, 25 Aug 2025 14:29:02 -0400 Subject: [PATCH v4 5/6] Add extension_state member to PlannedStmt. Extensions can stash data computed at plan time into this list using planner_shutdown_hook (or perhaps other mechanisms) and then access it from any code that has access to the PlannedStmt (such as explain hooks), allowing for extensible debugging and instrumentation of plans. --- src/include/nodes/plannodes.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/src/include/nodes/plannodes.h b/src/include/nodes/plannodes.h index 3908847e3bf..afc00228396 100644 --- a/src/include/nodes/plannodes.h +++ b/src/include/nodes/plannodes.h @@ -149,6 +149,15 @@ typedef struct PlannedStmt /* non-null if this is utility stmt */ Node *utilityStmt; + /* + * DefElem objects added by extensions, e.g. using planner_shutdown_hook + * + * Set each DefElem's defname to the name of the plugin or extension, and + * the argument to a tree of nodes that all have copy and read/write + * support. + */ + List *extension_state; + /* statement location in source string (copied from Query) */ /* start location, or -1 if unknown */ ParseLoc stmt_location; -- 2.39.5 (Apple Git-154)