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#pragma once
#include <Analyzer/IQueryTreePass.h>
namespace DB
{
/** Convert `multiIf` with single condition into `if`.
*
* Example: SELECT multiIf(x, 1, 0);
* Result: SELECT if(x, 1, 0);
*/
class MultiIfToIfPass final : public IQueryTreePass
{
public:
String getName() override { return "MultiIfToIf"; }
String getDescription() override { return "Optimize multiIf with single condition to if."; }
void run(QueryTreeNodePtr query_tree_node, ContextPtr context) override;
};
}
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