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63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
#pragma once
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#include <DB/Storages/StorageView.h>
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namespace DB
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{
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class StorageMaterializedView : public StorageView {
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public:
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static StoragePtr create(
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const String & table_name_,
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const String & database_name_,
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Context & context_,
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ASTPtr & query_,
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NamesAndTypesListPtr columns_,
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const NamesAndTypesList & materialized_columns_,
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const NamesAndTypesList & alias_columns_,
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const ColumnDefaults & column_defaults_,
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bool attach_);
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std::string getName() const override { return "MaterializedView"; }
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std::string getInnerTableName() const { return ".inner." + table_name; }
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StoragePtr getInnerTable() const { return context.getTable(database_name, getInnerTableName()); }
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NameAndTypePair getColumn(const String & column_name) const override;
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bool hasColumn(const String & column_name) const override;
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bool supportsSampling() const override { return getInnerTable()->supportsSampling(); }
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bool supportsPrewhere() const override { return getInnerTable()->supportsPrewhere(); }
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bool supportsFinal() const override { return getInnerTable()->supportsFinal(); }
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bool supportsParallelReplicas() const override { return getInnerTable()->supportsParallelReplicas(); }
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bool supportsIndexForIn() const override { return getInnerTable()->supportsIndexForIn(); }
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BlockOutputStreamPtr write(ASTPtr query, const Settings & settings) override;
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void drop() override;
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bool optimize(const String & partition, bool final, const Settings & settings) override;
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BlockInputStreams read(
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const Names & column_names,
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ASTPtr query,
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const Context & context,
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const Settings & settings,
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QueryProcessingStage::Enum & processed_stage,
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size_t max_block_size = DEFAULT_BLOCK_SIZE,
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unsigned threads = 1) override;
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private:
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StorageMaterializedView(
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const String & table_name_,
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const String & database_name_,
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Context & context_,
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ASTPtr & query_,
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NamesAndTypesListPtr columns_,
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const NamesAndTypesList & materialized_columns_,
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const NamesAndTypesList & alias_columns_,
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const ColumnDefaults & column_defaults_,
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bool attach_);
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};
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}
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