Method executeTable

src/Interpreters/InterpreterShowStatsQuery.cpp:485–512

BlockIO InterpreterShowStatsQuery::executeTable()
{
    auto query = query_ptr->as<const ASTShowStatsQuery>();
    auto context = getContext();
    auto catalog = Statistics::createCatalogAdaptor(context);
    auto tables = getTablesFromAST(context, query);
    std::vector<FormattedOutputData> result;
    for (auto & table : tables)
    {
        FormattedOutputData data;
        auto obj = getTableStatistics(context, table);
        auto storage = catalog->getStorageByTableId(table);
        data.append("database", table.getDatabaseName());
        data.append("table", table.getTableName());
        data.append("engine", storage->getName());
        data.append("unique_key", UUIDHelpers::UUIDToString(table.getUniqueKey()));
        data.append("row_count", obj ? std::to_string(obj->getRowCount()) : "");
        data.append("timestamp", obj ? AutoStats::serializeToText(obj->getTimestamp()) : "");
        result.emplace_back(std::move(data));
    }

    auto block = outputFormattedBlock(result, {"database", "table", "engine", "unique_key", "row_count", "timestamp"});
    BlocksList list = {std::move(block)};
    BlockIO res;
    // res.in = std::make_shared<Block>(sample_block.cloneWithColumns(std::move(res_columns)));
    res.in = std::make_shared<BlocksListBlockInputStream>(std::move(list));
    return res;
}

BlockIO InterpreterShowStatsQuery::execute()
{