commit e855d8c81a0cd73aa1913825e7b4395961e6f2c9
Author: Lukas Fittl <lukas@fittl.com>
Date:   Sun Jan 3 15:57:25 2021 -0800

    LimitOption: Correctly order LIMIT_OPTION_DEFAULT enum value first
    
    This seems like an oversight in the commit that added support for
    FETCH FIRST... WITH TIES, and causes the parsetree to always have
    limitOption = LIMIT_OPTION_COUNT, even when no LIMIT/OFFSET is specified.

diff --git a/src/backend/executor/nodeLimit.c b/src/backend/executor/nodeLimit.c
index e6f1fb1562..24da52d62c 100644
--- a/src/backend/executor/nodeLimit.c
+++ b/src/backend/executor/nodeLimit.c
@@ -153,7 +153,8 @@ ExecLimit(PlanState *pstate)
 				if (!node->noCount &&
 					node->position - node->offset >= node->count)
 				{
-					if (node->limitOption == LIMIT_OPTION_COUNT)
+					if (node->limitOption == LIMIT_OPTION_COUNT ||
+						node->limitOption == LIMIT_OPTION_DEFAULT)
 					{
 						node->lstate = LIMIT_WINDOWEND;
 						return NULL;
diff --git a/src/include/nodes/nodes.h b/src/include/nodes/nodes.h
index 855009fd6e..7cc3ca38dc 100644
--- a/src/include/nodes/nodes.h
+++ b/src/include/nodes/nodes.h
@@ -427,6 +427,7 @@ typedef enum OnConflictAction
  */
 typedef enum LimitOption
 {
+	LIMIT_OPTION_DEFAULT,		/* No limit present */
 	LIMIT_OPTION_COUNT,			/* FETCH FIRST... ONLY */
 	LIMIT_OPTION_WITH_TIES,		/* FETCH FIRST... WITH TIES */
 } LimitOption;