[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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