Using as in the TSQLQuery

Question

I've been evaluating Delphi XE4 (compiling against win32, but final platform will be iOS) and I need to create SQLite database (no problem with that) and make some queries. This is one query I'd like to use:

  select id as _id, name, note as description from notes

And this is my code:

  q := TSQLQuery.Create(nil);
  try
    q.SQLConnection := MainForm.sqlite1;
    q.SQL.Text := sql;
    q.Open;
  finally
    q.Free;
  end;

The problem is that query returns original field names (id, name, note), not the one I used (_id, name, description).

  q.Fields[0].FieldName = 'id' //it should be _id
  q.Fields[2].FieldName = 'note' //it should be description

That makes all sorts of problems. Using

  count(*) as myfield

returns

q.Fields[0].FieldName = Column0 //it should be myfield

that is not acceptable.

Anybody had same problems?

Answer 1

In order to get the proper alias names of the fields, you must add the ColumnMetaDataSupported param to the Params property of the TSQLConnectioncomponent with the False value.