postgres=# select * from aot;
 slot_time | slot_count |  event  | event_count | event_rate 
-----------+------------+---------+-------------+------------
 21:00:00  |          3 | Event 1 |           2 |      33.33
 21:01:00  |          4 | Event 1 |           4 |      33.34
(2 rows)

# 切换到扩展显示模式
seaboxsql=# \x
Expanded display is on.
seaboxsql=# select * from aot;
-[ RECORD 1 ]---------
slot_time   | 21:00:00
slot_count  | 3
event       | Event 1
event_count | 2
event_rate  | 33.33
-[ RECORD 2 ]---------
slot_time   | 21:01:00
slot_count  | 4
event       | Event 1
event_count | 4
event_rate  | 33.34