https://clickhouse-test-reports.s3.yandex.net/18817/9049599e367bcccd809f45af138452f965b3303a/stress_test_(thread)/test_run.txt.out.log


res.type = MATERIALIZE_INDEX;
        res.partition = command->partition;
        res.predicate = nullptr;
        res.index_name = command->index->as<ASTIdentifier &>().name();
        return res;
    }
    else if (parse_alter_commands && command->type == ASTAlterCommand::MODIFY_COLUMN)
    {
        MutationCommand res;
        res.ast = command->ptr();
        res.type = MutationCommand::Type::READ_COLUMN;
        const auto & ast_col_decl = command->col_decl->as<ASTColumnDeclaration &>();
        res.column_name = ast_col_decl.name;
        res.data_type = DataTypeFactory::instance().get(ast_col_decl.type);
        return res;
    }
    else if (parse_alter_commands && command->type == ASTAlterCommand::DROP_COLUMN)
    {
        MutationCommand res;
        res.ast = command->ptr();
        res.type = MutationCommand::Type::DROP_COLUMN;
        res.column_name = getIdentifierName(command->column);
        if (command->partition)
            res.partition = command->partition;
        if (command->clear_column)
            res.clear = true;
        return res;
    }
    else if (parse_alter_commands && command->type == ASTAlterCommand::DROP_INDEX)
    {