From 20855de1fcd1ec35c4cac2367fd3d96684cd806d Mon Sep 17 00:00:00 2001
From: Tatsuo Ishii <ishii@postgresql.org>
Date: Sun, 25 Jun 2023 20:48:14 +0900
Subject: [PATCH v1 3/7] Row pattern recognition patch (planner).

---
 src/backend/optimizer/plan/createplan.c | 13 ++++++++++---
 src/include/nodes/plannodes.h           |  9 +++++++++
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c
index 4bb38160b3..5ac65248a2 100644
--- a/src/backend/optimizer/plan/createplan.c
+++ b/src/backend/optimizer/plan/createplan.c
@@ -287,8 +287,8 @@ static WindowAgg *make_windowagg(List *tlist, Index winref,
 								 int frameOptions, Node *startOffset, Node *endOffset,
 								 Oid startInRangeFunc, Oid endInRangeFunc,
 								 Oid inRangeColl, bool inRangeAsc, bool inRangeNullsFirst,
-								 List *runCondition, List *qual, bool topWindow,
-								 Plan *lefttree);
+								 List *runCondition, List *patternVariable, List *patternRegexp, List *defineClause,
+								 List *qual, bool topWindow, Plan *lefttree);
 static Group *make_group(List *tlist, List *qual, int numGroupCols,
 						 AttrNumber *grpColIdx, Oid *grpOperators, Oid *grpCollations,
 						 Plan *lefttree);
@@ -2684,6 +2684,9 @@ create_windowagg_plan(PlannerInfo *root, WindowAggPath *best_path)
 						  wc->inRangeAsc,
 						  wc->inRangeNullsFirst,
 						  wc->runCondition,
+						  wc->patternVariable,
+						  wc->patternRegexp,
+						  wc->defineClause,
 						  best_path->qual,
 						  best_path->topwindow,
 						  subplan);
@@ -6581,7 +6584,8 @@ make_windowagg(List *tlist, Index winref,
 			   int frameOptions, Node *startOffset, Node *endOffset,
 			   Oid startInRangeFunc, Oid endInRangeFunc,
 			   Oid inRangeColl, bool inRangeAsc, bool inRangeNullsFirst,
-			   List *runCondition, List *qual, bool topWindow, Plan *lefttree)
+			   List *runCondition, List *patternVariable, List *patternRegexp, List *defineClause,
+			   List *qual, bool topWindow, Plan *lefttree)
 {
 	WindowAgg  *node = makeNode(WindowAgg);
 	Plan	   *plan = &node->plan;
@@ -6607,6 +6611,9 @@ make_windowagg(List *tlist, Index winref,
 	node->inRangeAsc = inRangeAsc;
 	node->inRangeNullsFirst = inRangeNullsFirst;
 	node->topWindow = topWindow;
+	node->patternVariable = patternVariable;
+	node->patternRegexp = patternRegexp;
+	node->defineClause = defineClause;
 
 	plan->targetlist = tlist;
 	plan->lefttree = lefttree;
diff --git a/src/include/nodes/plannodes.h b/src/include/nodes/plannodes.h
index 1b787fe031..eb511176ac 100644
--- a/src/include/nodes/plannodes.h
+++ b/src/include/nodes/plannodes.h
@@ -1096,6 +1096,15 @@ typedef struct WindowAgg
 	/* nulls sort first for in_range tests? */
 	bool		inRangeNullsFirst;
 
+	/* Row Pattern Recognition PATTERN variable name (list of String) */
+	List		*patternVariable;
+
+	/* Row Pattern Recognition PATTERN regular expression quantifier ('+' or ''. list of String) */
+	List		*patternRegexp;
+
+	/* Row Pattern Recognition DEFINE clause (list of TargetEntry) */
+	List	   *defineClause;
+
 	/*
 	 * false for all apart from the WindowAgg that's closest to the root of
 	 * the plan
-- 
2.25.1