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#pragma once
#include <Analyzer/IQueryTreePass.h>
namespace DB
{
/** Remove injective functions from `uniq*` functions arguments.
*
* Example: SELECT uniq(injectiveFunction(argument));
* Result: SELECT uniq(argument);
*/
class UniqInjectiveFunctionsEliminationPass final : public IQueryTreePass
{
public:
String getName() override { return "UniqInjectiveFunctionsElimination"; }
String getDescription() override { return "Remove injective functions from uniq functions arguments."; }
void run(QueryTreeNodePtr query_tree_node, ContextPtr context) override;
};
}
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