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#pragma once
#include <Analyzer/IQueryTreeNode.h>
namespace DB
{
/** Collect window function nodes in node children.
* Do not visit subqueries.
*/
QueryTreeNodes collectWindowFunctionNodes(const QueryTreeNodePtr & node);
/** Collect window function nodes in node children and add them into result.
* Do not visit subqueries.
*/
void collectWindowFunctionNodes(const QueryTreeNodePtr & node, QueryTreeNodes & result);
/** Returns true if there are window function nodes in node children, false otherwise.
* Do not visit subqueries.
*/
bool hasWindowFunctionNodes(const QueryTreeNodePtr & node);
/** Assert that there are no window function nodes in node children.
* Do not visit subqueries.
*/
void assertNoWindowFunctionNodes(const QueryTreeNodePtr & node, const String & assert_no_window_functions_place_message);
}
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