From 8cb53654dbdb4c386369eb988062d0bbb6de725e Mon Sep 17 00:00:00 2001
From: Simon Riggs <simon@2ndQuadrant.com>
Date: Fri, 6 Apr 2012 10:21:40 +0100
Subject: Add DROP INDEX CONCURRENTLY [IF EXISTS], uses
 ShareUpdateExclusiveLock

---
 src/include/catalog/dependency.h | 1 +
 src/include/catalog/index.h      | 2 +-
 src/include/nodes/parsenodes.h   | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/include')

diff --git a/src/include/catalog/dependency.h b/src/include/catalog/dependency.h
index 28e68c5ab59..f0eb564ebd9 100644
--- a/src/include/catalog/dependency.h
+++ b/src/include/catalog/dependency.h
@@ -153,6 +153,7 @@ typedef enum ObjectClass
 /* in dependency.c */
 
 #define PERFORM_DELETION_INTERNAL			0x0001
+#define PERFORM_DELETION_CONCURRENTLY		0x0002
 
 extern void performDeletion(const ObjectAddress *object,
 				DropBehavior behavior, int flags);
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index c7f1dd285cd..3f73a6c58c2 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -63,7 +63,7 @@ extern void index_constraint_create(Relation heapRelation,
 						bool update_pgindex,
 						bool allow_system_table_mods);
 
-extern void index_drop(Oid indexId);
+extern void index_drop(Oid indexId, bool concurrent);
 
 extern IndexInfo *BuildIndexInfo(Relation index);
 
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index bc9b6bd774c..aaa950db265 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -1909,6 +1909,7 @@ typedef struct DropStmt
 	ObjectType	removeType;		/* object type */
 	DropBehavior behavior;		/* RESTRICT or CASCADE behavior */
 	bool		missing_ok;		/* skip error if object is missing? */
+	bool		concurrent;		/* drop index concurrently? */
 } DropStmt;
 
 /* ----------------------
-- 
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