SELECT "1" AS Field_Name , MAX(date1) AS Last_Update FROM table1 WHERE field1="1"
UNION
SELECT "2" AS Field_Name , MAX(date1) AS Last_Update FROM table1 WHERE field1="2"
SELECT "1" AS Field_Name , MAX(date1) AS Last_Update FROM table1 WHERE field1="1"
UNION
SELECT "2" AS Field_Name , MAX(date1) AS Last_Update FROM table1 WHERE field1="2"