#pragma once #include namespace DB { class StorageMaterializedView : public StorageView { public: static StoragePtr create(const String & table_name_, const String & database_name_, Context & context_, ASTPtr & query_, NamesAndTypesListPtr columns_, bool attach_); std::string getName() const { return "MaterializedView"; } std::string getInnerTableName() const { return ".inner." + table_name; } BlockOutputStreamPtr write(ASTPtr query); void drop() override; bool optimize(); BlockInputStreams read( const Names & column_names, ASTPtr query, const Settings & settings, QueryProcessingStage::Enum & processed_stage, size_t max_block_size = DEFAULT_BLOCK_SIZE, unsigned threads = 1); private: StoragePtr data; StorageMaterializedView(const String & table_name_, const String & database_name_, Context & context_, ASTPtr & query_, NamesAndTypesListPtr columns_, bool attach_); }; }