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#pragma once
#include <Analyzer/IQueryTreePass.h>
namespace DB
{
/* Eliminates functions of other keys in GROUP BY section.
* Ex.: GROUP BY x, f(x)
* Output: GROUP BY x
*/
class OptimizeGroupByFunctionKeysPass final : public IQueryTreePass
{
public:
String getName() override { return "OptimizeGroupByFunctionKeys"; }
String getDescription() override { return "Eliminates functions of other keys in GROUP BY section."; }
void run(QueryTreeNodePtr query_tree_node, ContextPtr context) override;
};
}
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