Fixing build.

src/Planner/findQueryForParallelReplicas.h

@@ -0,0 +1,38 @@
+#pragma once
+#include <list>
+#include <memory>
+
+namespace DB
+{
+
+class QueryNode;
+class TableNode;
+
+class IQueryTreeNode;
+using QueryTreeNodePtr = std::shared_ptr<IQueryTreeNode>;
+
+struct SelectQueryOptions;
+
+/// Find a qury which can be executed with parallel replicas up to WithMergableStage.
+/// Returned query will always contain some (>1) subqueries, possibly with joins.
+const QueryNode * findQueryForParallelReplicas(const QueryTreeNodePtr & query_tree_node, SelectQueryOptions & select_query_options);
+
+/// Find a table from which we should read on follower replica. It's the left-most table within all JOINs and UNIONs.
+const TableNode * findTableForParallelReplicas(const QueryTreeNodePtr & query_tree_node, SelectQueryOptions & select_query_options);
+
+struct JoinTreeQueryPlan;
+
+class PlannerContext;
+using PlannerContextPtr = std::shared_ptr<PlannerContext>;
+
+struct StorageLimits;
+using StorageLimitsList = std::list<StorageLimits>;
+
+/// Execute QueryNode with parallel replicas up to WithMergableStage and return a plan.
+/// This method does not check that QueryNode is valid. Ideally it should be a result of findParallelReplicasQuery.
+JoinTreeQueryPlan buildQueryPlanForParallelReplicas(
+    const QueryNode & query_node,
+    const PlannerContextPtr & planner_context,
+    std::shared_ptr<const StorageLimitsList> storage_limits);
+
+}