How to check if result of request to DB is empty?

[Suliman via Digitalmars-d-learn]

On Saturday, 12 December 2015 at 12:14:30 UTC, Vadim Lopatin 
wrote:
> On Saturday, 12 December 2015 at 12:06:21 UTC, Suliman wrote:
>> On Saturday, 12 December 2015 at 11:53:51 UTC, Suliman wrote:
>>> On Saturday, 12 December 2015 at 11:31:18 UTC, Suliman wrote:
>>>> Oh sorry! I used wrong host! All ok!
>>>
>>> Yes, there was issue with host name, but it's do not solve 
>>> problem. Second DB have same fields and I still getting false 
>>> instead moving into while loop
>>
>> It's look like it do `next` step before return something.
>> So if in DB 1 value it will work like:
>> do step
>> if no value after it --> return false
>> if yes --> return true
>>
>> but I need any way to check if first value in DB is exists. 
>> Any suggestion?
>
> If you expect to have single or zero rows in result, use
> if (rs.next()) {
>             dbuser = rs.getString(1);
>             dbpassword = rs.getString(2);
>             writeln(dbuser);
> } else {
>             writeln("user not found");
> }

Do not help :( same result. It's return false :(