ClickHouse/src/Interpreters/WhereConstraintsOptimizer.h

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2021-01-04 20:55:32 +00:00
#pragma once
#include <Parsers/IAST_fwd.h>
#include <Core/Block.h>
#include <Core/NamesAndTypes.h>
#include <Interpreters/Aliases.h>
#include <Interpreters/SelectQueryOptions.h>
#include <Interpreters/DatabaseAndTableWithAlias.h>
#include <Storages/IStorage_fwd.h>
namespace DB
{
struct StorageInMemoryMetadata;
using StorageMetadataPtr = std::shared_ptr<const StorageInMemoryMetadata>;
class WhereConstraintsOptimizer final
{
public:
WhereConstraintsOptimizer(ASTSelectQuery * select_query, Aliases & /* aliases */, const NameSet & /* source_columns_set */,
const std::vector<TableWithColumnNamesAndTypes> & /* tables_with_columns */,
const StorageMetadataPtr & metadata_snapshot);
void perform();
private:
ASTSelectQuery * select_query;
/*Aliases & aliases;
const NameSet & source_columns_set;
const std::vector<TableWithColumnNamesAndTypes> & tables_with_columns;*/
const StorageMetadataPtr & metadata_snapshot;
};
}