[DUG] Result set of DB query

Neven MacEwan neven at mwk.co.nz
Fri Feb 15 12:56:32 NZDT 2008


Nick

You could create your own class (subclassing TList) or just use a TList
(for ease of destruction use a TObjectList?)

var
  I: integer;
  queryresult : TNicksQuery;
begin
  try
   queryresult := new TNicksQuery('SELECT id,name,phone FROM user WHERE 
id=1');
  for i := 0 to pred(queryresult.count) do begin
    ....
  end
 finally
  freeandnil(queryresult )
 end;
end;



HTH
>
> I just writing up a class for my database calls.
> One of the methods I am doing allows me to put in some sql and 
> parameters and it spits back the row result (only ever be one)
>
> So if my component was, Query = TAdoQuery (or something similar), I am 
> doing
>
> Query.Sql.text := somequery;
> //-- add in params
> Query.open;
> Query.first;
>
> Now I can do,
> result := Query.Fields[0].AsVariant;
> to get the first column, but I am after the whole row result. But Im 
> not sure what class/type I would be using.
> I think, from looking at DB.pas source I would be using TFieldList?
>
> Effectively what I am after is like this
>
>
> var
> queryresult : TSomething?TFieldList?
> begin
> queryresult := db.fetchrow('SELECT id,name,phone FROM user WHERE id=1');
> showmessage(queryresult.fieldbyname('name'));
> end;
>
> follow what I mean?
>
>
>
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