Method executeImpl

src/TableFunctions/TableFunctionValues.cpp:166–186

template <bool interpret_first_argument_as_structure>
StoragePtr TableFunctionValues<interpret_first_argument_as_structure>::executeImpl(const ASTPtr & ast_function, ContextPtr context, const std::string & table_name, ColumnsDescription /*cached_columns*/, bool is_insert_query) const
{
    auto columns = getActualTableStructure(context, is_insert_query);

    Block sample_block;
    for (const auto & name_type : columns.getOrdinary())
        sample_block.insert({ name_type.type->createColumn(), name_type.type, name_type.name });

    MutableColumns res_columns = sample_block.cloneEmptyColumns();

    ASTs & args = ast_function->children.at(0)->children;

    /// Parsing other arguments as values and inserting them into columns
    parseAndInsertValues(res_columns, args, sample_block, has_structure_in_arguments ? 1 : 0, context);

    Block res_block = sample_block.cloneWithColumns(std::move(res_columns));

    auto res = std::make_shared<StorageValues>(StorageID(getDatabaseName(), table_name), columns, res_block);
    res->startup();
    return res;
}

}