Enumerating user tables in an InterBase database

Problem/Question/Abstract:

Enumerating user tables in an InterBase database

Answer:

A list of user tables can be retrieved by querying system table rdb$relations.

The example below shows how to do this - it inserts the table names sorted alphabetically into a ListBox (lbSourceTables).

begin
  ibcSourceList.SQL.Clear;
  ibcSourceList.SQL.Add('select rdb$relation_name from rdb$relations');
  ibcSourceList.SQL.Add('where rdb$system_flag = 0');
  ibcSourceList.SQL.Add('order by rdb$relation_name');
  ibcSourceList.Open;
  while not ibcSourceList.Eof do
  begin
    lbSourceTables.Items.Add(ibcSourceList.Fields[0].AsString);
    ibcSourceList.Next;
  end;
  ibcSourceList.Close;
end;