Show all student ids who are older than 20.
SELECT StuID FROM Student WHERE age  >  20
SELECT StuID FROM Student WHERE age  >  20
[{'StuID': 1003}, {'StuID': 1005}, {'StuID': 1011}, {'StuID': 1017}, {'StuID': 1020}, {'StuID': 1030}, {'StuID': 1035}]