[sqlite] how to get result of eval as list of lists?

[Stefan Finzel]

Is there a fast way to get the result of a select as list of lists and 
not as a flat list?

db1 eval {INSERT INTO t1 VALUES(1,'hello')}
db1 eval {INSERT INTO t1 VALUES(2,'goodbye')}
db1 eval {INSERT INTO t1 VALUES(3,'howdy!')}
set x [db1 eval {SELECT * FROM t1}]
Now i get a flat list:
1 hello 2 goodbye 3 howdy!
but i would prefer to have

set x [db1 evallist {SELECT * FROM t1}]

{1 hello} {2 goodbye} {3 howdy!}
They way I used so far seems not to be the fastest (especially for 
larger data sets):

set _res_ {}
db eval {SELECT * FROM t1} _values_ {
   set _tmp_ {}
   foreach _part_ $_values_(*) {
       lappend _tmp_ $_values_(${_part_})
  }
  lappend _res_ ${_tmp_}
}
TIA
Stefan