#pragma once #include namespace DB { class Context; /// Implements `row_policies` system table, which allows you to get information about row policies. class StorageSystemRowPolicies final : public IStorageSystemOneBlock { public: std::string getName() const override { return "SystemRowPolicies"; } static ColumnsDescription getColumnsDescription(); void backupData(BackupEntriesCollector & backup_entries_collector, const String & data_path_in_backup, const std::optional & partitions) override; void restoreDataFromBackup(RestorerFromBackup & restorer, const String & data_path_in_backup, const std::optional & partitions) override; protected: using IStorageSystemOneBlock::IStorageSystemOneBlock; void fillData(MutableColumns & res_columns, ContextPtr context, const ActionsDAG::Node *, std::vector) const override; }; }