uni=# explain analyze
uni-# select * from Students where id=100250;
                       QUERY PLAN
-------------------------------------------------------
 Index Scan using student_pkey on student
            (cost=0.00..8.27 rows=1 width=9)
            (actual time=0.049..0.049 rows=0 loops=1)
   Index Cond: (id = 100250)
 Total runtime: 0.1 ms