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#pragma once
#include <Parsers/IAST_fwd.h>
namespace DB
{
class ASTSelectQuery;
struct StorageInMemoryMetadata;
using StorageMetadataPtr = std::shared_ptr<const StorageInMemoryMetadata>;
/// Optimizer that can remove useless parts of conditions
/// in WHERE clause according to table constraints.
class WhereConstraintsOptimizer final
{
public:
WhereConstraintsOptimizer(
ASTSelectQuery * select_query,
const StorageMetadataPtr & metadata_snapshot,
bool optimize_append_index_);
void perform();
private:
ASTSelectQuery * select_query;
const StorageMetadataPtr & metadata_snapshot;
bool optimize_append_index;
};
}
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