From 1389105a30f64dce7f7bb1cbbe88cfb1e5218992 Mon Sep 17 00:00:00 2001
From: Nikita Vasilev <nekitvas@gmail.com>
Date: Tue, 9 Apr 2019 18:36:33 +0300
Subject: [PATCH] parsing

---
 dbms/src/Parsers/ASTAlterQuery.cpp    | 11 +++++++++++
 dbms/src/Parsers/ASTAlterQuery.h      |  1 +
 dbms/src/Parsers/ParserAlterQuery.cpp | 18 ++++++++++++++++++
 3 files changed, 30 insertions(+)

diff --git a/dbms/src/Parsers/ASTAlterQuery.cpp b/dbms/src/Parsers/ASTAlterQuery.cpp
index 12491c83762..c0e4584f8c3 100644
--- a/dbms/src/Parsers/ASTAlterQuery.cpp
+++ b/dbms/src/Parsers/ASTAlterQuery.cpp
@@ -100,6 +100,17 @@ void ASTAlterCommand::formatImpl(
                       << "DROP INDEX " << (if_exists ? "IF EXISTS " : "") << (settings.hilite ? hilite_none : "");
         index->formatImpl(settings, state, frame);
     }
+    else if (type == ASTAlterCommand::MATERIALIZE_INDEX)
+    {
+        settings.ostr << (settings.hilite ? hilite_keyword : "") << indent_str
+                      << "MATERIALIZE INDEX " << (settings.hilite ? hilite_none : "");
+        index->formatImpl(settings, state, frame);
+        if (partition)
+        {
+            settings.ostr << (settings.hilite ? hilite_keyword : "") << indent_str<< " IN PARTITION " << (settings.hilite ? hilite_none : "");
+            partition->formatImpl(settings, state, frame);
+        }
+    }
     else if (type == ASTAlterCommand::DROP_PARTITION)
     {
         settings.ostr << (settings.hilite ? hilite_keyword : "") << indent_str << (detach ? "DETACH" : "DROP") << " PARTITION "
diff --git a/dbms/src/Parsers/ASTAlterQuery.h b/dbms/src/Parsers/ASTAlterQuery.h
index 7261170288a..6a078b02902 100644
--- a/dbms/src/Parsers/ASTAlterQuery.h
+++ b/dbms/src/Parsers/ASTAlterQuery.h
@@ -30,6 +30,7 @@ public:
 
         ADD_INDEX,
         DROP_INDEX,
+        MATERIALIZE_INDEX,
 
         DROP_PARTITION,
         ATTACH_PARTITION,
diff --git a/dbms/src/Parsers/ParserAlterQuery.cpp b/dbms/src/Parsers/ParserAlterQuery.cpp
index b33679ad26b..7864d291559 100644
--- a/dbms/src/Parsers/ParserAlterQuery.cpp
+++ b/dbms/src/Parsers/ParserAlterQuery.cpp
@@ -30,6 +30,7 @@ bool ParserAlterCommand::parseImpl(Pos & pos, ASTPtr & node, Expected & expected
 
     ParserKeyword s_add_index("ADD INDEX");
     ParserKeyword s_drop_index("DROP INDEX");
+    ParserKeyword s_materialize_index("MATERIALIZE INDEX");
 
     ParserKeyword s_attach_partition("ATTACH PARTITION");
     ParserKeyword s_detach_partition("DETACH PARTITION");
@@ -124,6 +125,23 @@ bool ParserAlterCommand::parseImpl(Pos & pos, ASTPtr & node, Expected & expected
         command->type = ASTAlterCommand::DROP_INDEX;
         command->detach = false;
     }
+    else if (s_materialize_index.ignore(pos, expected))
+    {
+        if (s_if_exists.ignore(pos, expected))
+            command->if_exists = true;
+
+        if (!parser_name.parse(pos, command->index, expected))
+            return false;
+
+        command->type = ASTAlterCommand::MATERIALIZE_INDEX;
+        command->detach = false;
+
+        if (s_in_partition.ignore(pos, expected))
+        {
+            if (!parser_partition.parse(pos, command->partition, expected))
+                return false;
+        }
+    }
     else if (s_clear_column.ignore(pos, expected))
     {
         if (s_if_exists.ignore(pos, expected))