From a1820916213e1d0ea9eee76567d65637b7672115 Mon Sep 17 00:00:00 2001
From: Sergey Fedorov <fets@yandex-team.ru>
Date: Tue, 11 Feb 2014 18:54:31 +0000
Subject: [PATCH] storages: support for CREATE MATERIALIZED VIEW IF NOT EXISTS
 [METR-9965]

---
 dbms/src/Parsers/ParserCreateQuery.cpp | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/dbms/src/Parsers/ParserCreateQuery.cpp b/dbms/src/Parsers/ParserCreateQuery.cpp
index 2c65aab08f8..47c91727bcb 100644
--- a/dbms/src/Parsers/ParserCreateQuery.cpp
+++ b/dbms/src/Parsers/ParserCreateQuery.cpp
@@ -329,15 +329,22 @@ bool ParserCreateQuery::parseImpl(Pos & pos, Pos end, ASTPtr & node, String & ex
 		}
 	} else {
 		/// VIEW or MATERIALIZED VIEW
-		if (s_materialized.ignore(pos, end, expected))
+		if (s_materialized.ignore(pos, end, expected) && ws.ignore(pos, end, expected))
 			is_materialized_view = true;
 		else
 			is_view = true;
 
-		ws.ignore(pos, end, expected);
-		if (!s_view.ignore(pos, end, expected))
+		if (!s_view.ignore(pos, end, expected) || !ws.ignore(pos, end, expected))
 			return false;
-		ws.ignore(pos, end);
+
+		if (s_if.ignore(pos, end, expected)
+			&& ws.ignore(pos, end)
+			&& s_not.ignore(pos, end, expected)
+			&& ws.ignore(pos, end)
+			&& s_exists.ignore(pos, end, expected)
+			&& ws.ignore(pos, end))
+			if_not_exists = true;
+
 		if (!name_p.parse(pos, end, table, expected))
 			return false;
 		ws.ignore(pos, end);