SELECT art, MAX(data) AS max_data FROM table1 INTO CURSOR _table1 GROUP BY 1
SELECT DISTINCT table1.art, table1.data, table1.prim FROM table1, _table1 INTO TABLE table2 WHERE table1.art==_table1.art AND table1.data=_table1.max_data

SELECT DISTINCT table1.art, table1.data_, table1.prim_ ;
  FROM table1, _table1 ;
  INTO TABLE table3 ;
  WHERE table1.art==_table1.art AND table1.data_=_table1.max_data

SCAN
 INSERT INTO table2 (art, data_, prim_) VALUES ( table3.art, table3.data_, table3.prim_ )
ENDSCAN

INSERT INTO table2 (art, data_, prim_) ;
  SELECT DISTINCT table1.art, table1.data_, table1.prim_ ;
  FROM table1, _table1 ;
  WHERE table1.art==_table1.art AND table1.data_=_table1.max_data