DBI函数的问题

我是一只不吃腥

请问以下这几个函数的参数的意义以及返回的结果是什么？
$rv=$dbh->;do($statement,$%attr,@bind_values);
$hash_ref=$dbh->;selectall_hashref($statement,$key_field);
@row_ary=$dbh->;selectrow_array($statement);
$rc=$sth->;bind_param($p_num,$bind_value,$bind_type);
还有很多，最好能给这方面的资料，谢谢各位大佬！

nasvel

ex:
(1) $dbh->;do("SELECT name FROM users where id = ?", undef, "1000");

(2) @array = $dbh->;selectrow_array("SELECT id, name FROM users where id = ?", undef, "1000");
So you'll get an @array = (1000, "admin").

(3) $ref = $dbh->;selectall_hashref("SELECT id, name FROM users", "id");
So you'll get a hashref like
$ref->;{1000} = {id =>;1000,  name=>; 'admin'};
$ref->;{1001} = {id =>;1001,  name=>; 'user1'};
....

我是一只不吃腥

谢谢楼上的